This list includes 56 Careers that start with O, from “OSHA Compliance Specialist” to “Oxygen Plant Operator”. It covers roles in safety, health, manufacturing, and services used worldwide.
Careers that start with O are occupational titles beginning with the letter O across many sectors. Notably, “Occupational Therapist” gained wider recognition after 20th-century rehabilitation work.
Below you’ll find the table with Occupation, Industry, Required education, Average salary (USD), and Notes.
Occupation: The official job title beginning with O; use it to identify roles that match your interests quickly.
Industry: The sector where the job commonly appears; it helps you find related fields and transferable opportunities.
Required education: Standardized education level needed for entry or advancement; use it to plan training or compare qualifications.
Average salary (USD): Median annual pay in US dollars; use it to compare earning potential across occupations and set expectations.
Notes: Short notes and source hints about data and typical employers; you can follow these for deeper research.
Careers that start with O
| Job Title | Industry | Required education | Median annual salary (USD) | Description |
|---|---|---|---|---|
| Occupational Therapist | Healthcare | Master | 88,000 (BLS, 2023) | Help patients regain daily-living skills after injury or illness; work in hospitals, rehab centers, schools. Good for those who enjoy hands-on patient care and problem-solving. |
| Occupational Therapy Assistant | Healthcare | Associate | 61,000 (BLS, 2023) | Support occupational therapists in delivering treatment plans in clinics, schools, or home health. Appeals to people wanting direct patient care with less schooling than therapists. |
| Ocularist | Healthcare | Cert. | 54,000 (Payscale, 2024) | Make and fit prosthetic eyes for patients, working in ocular prosthetics labs or hospitals; combines craft, precision, and patient interaction. |
| Ophthalmologist | Healthcare | Professional degree | 255,000 (Medscape, 2023) | Medical doctor diagnosing and surgically treating eye diseases; practices in hospitals, private clinics. Suited for those wanting medicine plus eye-specialty surgery. |
| Optometrist | Healthcare | Professional degree | 123,000 (BLS, 2023) | Diagnose vision problems, prescribe glasses/contacts, manage eye disease in clinics or retail eye centers; appeals to clinicians who prefer outpatient care and retail options. |
| Optician | Healthcare/Retail | Cert. | 40,000 (BLS, 2023) | Fit and dispense eyeglasses and contacts in optical shops and vision centers; hands-on, customer-facing work for people who like technical retail. |
| Ophthalmic Technician | Healthcare | Cert. | 39,000 (Payscale, 2024) | Assist eye doctors with exams and diagnostic tests in ophthalmology clinics or hospitals; entry to eye-care field with technical patient contact. |
| Optical Engineer | Engineering | Bachelor | 95,000 (Glassdoor, 2024) | Design lenses, imaging systems, and optical devices for tech firms, defense, or manufacturing; ideal for engineers fascinated by light and precision design. |
| Operations Manager | Business | Bachelor | 108,000 (BLS, 2023) | Oversee daily operations, staff, and budgets in manufacturing, retail, or services; great for leaders who like problem-solving and broad responsibility. |
| Operations Director | Business | Bachelor | 140,000 (Glassdoor, 2024) | Senior leader setting operational strategy across organizations like corporations or hospitals; fits experienced managers aiming for high-impact roles. |
| Operations Research Analyst | Business/Tech | Bachelor | 92,000 (BLS, 2023) | Use math and data to optimize processes for logistics, finance, or tech firms; appeals to analytical thinkers who love modeling and efficiency gains. |
| Operations Analyst | Business | Bachelor | 75,000 (Glassdoor, 2024) | Analyze workflows, metrics, and systems for companies to improve performance; entry point to operations and process improvement roles. |
| Operations Coordinator | Business | Associate | 50,000 (Indeed, 2024) | Coordinate schedules, shipments, and project tasks in offices, nonprofits, or warehouses; good for organized multitaskers starting in ops. |
| Operations Specialist | Business | Associate | 60,000 (Glassdoor, 2024) | Handle specific operational functions like logistics, compliance, or customer ops in corporate teams; practical role for specialists within operations. |
| Oral Surgeon (Oral & Maxillofacial Surgeon) | Healthcare | Professional degree | 350,000 (Medscape, 2023) | Perform complex dental and facial surgeries in hospitals or specialty clinics; for those pursuing surgical dentistry and high-skill procedures. |
| Orderly | Healthcare | HS diploma | 30,000 (Payscale, 2024) | Assist hospital staff with patient transport, basic care, and maintaining rooms; entry-level role for those wanting patient-facing healthcare work. |
| Ombudsman | Government/Healthcare | Bachelor | 60,000 (Glassdoor, 2024) | Advocate for clients’ rights and resolve complaints in healthcare, government, or elder services; appealing to problem-solvers focused on fairness. |
| Oncologist | Healthcare | Professional degree | 300,000 (Medscape, 2023) | Specialize in cancer diagnosis and treatment in hospitals or cancer centers; suited for physicians drawn to complex care and long-term patient relationships. |
| Oncology Nurse | Healthcare | Bachelor | 83,000 (BLS, 2023) | Provide chemotherapy administration, symptom management, and support in cancer centers and hospitals; rewarding for nurses who want specialized, compassionate care. |
| Onboarding Specialist | Human Resources | Bachelor | 55,000 (Glassdoor, 2024) | Manage new-hire orientations, paperwork, and integration for companies; great for organized communicators who enjoy HR and training. |
| Online Content Manager | Media/Tech | Bachelor | 72,000 (Glassdoor, 2024) | Plan and manage digital content for websites, social media, and brands in agencies or tech firms; appeals to creative strategists and editors. |
| Online Marketing Manager | Marketing | Bachelor | 85,000 (Glassdoor, 2024) | Lead digital marketing campaigns, SEO/SEM, and analytics for brands or agencies; fits data-driven creatives focused on ROI. |
| Onsite Technician | IT/Services | Cert. | 48,000 (Indeed, 2024) | Provide in-person tech support and equipment installs for IT firms or service companies; hands-on job for tech-savvy problem solvers. |
| Open-Source Developer | Tech | Bachelor | 95,000 (Glassdoor, 2024) | Contribute to and maintain open-source software projects for tech firms or as freelancers; appealing to collaborative coders and community builders. |
| Open-Pit Mine Operator | Mining | HS diploma | 65,000 (Indeed, 2024) | Operate heavy equipment and oversee material extraction at quarries or mines; suited to those who like outdoor industrial work and machinery. |
| Operating Room Nurse (OR Nurse) | Healthcare | Bachelor | 85,000 (BLS, 2023) | Assist surgical teams with patient prep, instruments, and intraoperative care in hospitals; ideal for nurses who like fast-paced clinical work. |
| Operations Technician | Manufacturing | Cert. | 54,000 (Payscale, 2024) | Run and maintain production equipment on factory floors or plants; good for technically minded hands-on workers. |
| Orchestra Librarian | Arts/Education | Bachelor | 48,000 (Payscale, 2024) | Manage music scores, parts, and archives for orchestras, schools, or opera companies; fits music lovers with organizational skills. |
| Orchestra Manager | Arts | Bachelor | 62,000 (Glassdoor, 2024) | Oversee logistics, budgets, and scheduling for orchestras and ensembles; blends administration with a passion for performing arts. |
| Orchestral Musician | Arts | Bachelor | 63,000 (BLS, 2023) | Perform in symphonies, opera houses, or ensembles; a career for highly trained instrumentalists who love live performance. |
| Ordination Secretary (Parish Secretary) | Nonprofit/Religious | HS diploma | 36,000 (Payscale, 2024) | Handle administrative tasks in churches or faith organizations; appeals to organized individuals wanting community-focused office work. |
| Ordnance Technician | Defense | Apprenticeship | 55,000 (DoD data, 2023) | Maintain and handle military munitions and explosives at bases or defense contractors; technical role within military and defense sectors. |
| Organic Farmer | Agriculture | HS diploma | 46,000 (USDA, 2023) | Grow certified organic crops or livestock on farms, farmers’ markets, or cooperatives; appeals to people who value sustainable, hands-on agriculture. |
| Organizational Development Consultant | Business | Master | 110,000 (Glassdoor, 2024) | Help companies improve structure, culture, and performance as external or internal consultants; great for strategic HR and change specialists. |
| Organist | Arts/Education | Bachelor | 45,000 (Payscale, 2024) | Play organ for churches, concert halls, or academic programs; fits trained keyboardists who enjoy liturgical or classical performance. |
| Orientation Leader | Education | HS diploma | 38,000 (Payscale, 2024) | Lead college orientation programs and help new students acclimate; often paid student-staff role for outgoing campus leaders. |
| Ornithologist | Science | Bachelor | 61,000 (BLS, 2023) | Study birds in field research, conservation groups, or government agencies; ideal for wildlife scientists passionate about avian ecology. |
| Orthodontist | Healthcare | Professional degree | 253,000 (BLS, 2023) | Diagnose and correct teeth alignment using braces and appliances in dental clinics; rewarding for dentists who like specialist work and long-term patient relationships. |
| Orthopedic Surgeon | Healthcare | Professional degree | 500,000 (Medscape, 2023) | Perform surgeries on bones, joints, and musculoskeletal injuries in hospitals; high-responsibility surgical career for those focused on orthopedics. |
| Orthopedic Nurse | Healthcare | Bachelor | 79,000 (BLS, 2023) | Care for patients with bone and joint conditions in hospitals or clinics; appeals to nurses who prefer surgical and rehabilitative cases. |
| Orthopedic Technician | Healthcare | Cert. | 45,000 (Payscale, 2024) | Fit braces, casts, and assist in orthopedic clinics or hospitals; practical role for those who enjoy hands-on patient support. |
| Orthotist | Healthcare | Master | 68,000 (BLS, 2023) | Design and fit braces and supportive devices for patients in clinics or prosthetic labs; combines clinical care with technical fabrication. |
| OSHA Compliance Specialist | Safety | Bachelor | 76,000 (Glassdoor, 2024) | Ensure workplace safety and regulatory compliance for firms or consultants; good for safety-minded professionals with regulatory interest. |
| Osteopath (Doctor of Osteopathic Medicine, DO) | Healthcare | Professional degree | 220,000 (Medscape, 2023) | Physician providing medical care with whole-person approach in hospitals, clinics; suited for those pursuing medical practice with holistic focus. |
| Outdoor Educator | Education/Recreation | Bachelor | 40,000 (Glassdoor, 2024) | Teach outdoor skills, environmental education, and lead experiential programs for camps, schools, or nonprofits; great for active educators who love nature. |
| Outdoor Guide | Recreation | HS diploma | 35,000 (Indeed, 2024) | Lead hikes, rafting, or adventure trips for outfitters and tour companies; appeals to outdoorsy people who enjoy guiding and teaching skills. |
| Outside Sales Representative | Sales | HS diploma | 65,000 (BLS, 2023) | Sell products or services in person, travel to clients for manufacturers or service firms; appeals to self-motivated, people-oriented sellers. |
| Outlet Store Manager | Retail | HS diploma | 50,000 (Payscale, 2024) | Run daily operations, staff, and merchandising at outlet retail locations; fits retail managers seeking store leadership roles. |
| Outreach Coordinator | Nonprofit | Bachelor | 48,000 (Glassdoor, 2024) | Develop community programs, partnerships, and events for nonprofits, schools, or health organizations; great for communicative, mission-driven professionals. |
| Outreach Worker | Social Services | HS diploma | 36,000 (Payscale, 2024) | Connect people to services, run community outreach programs for nonprofits or public health; meaningful role for community-focused helpers. |
| Owner/Operator (Small Business) | Business | HS diploma | 77,000 (SBA/IRS median, 2023) | Run and manage a small independent business across industries; appealing to entrepreneurs who want autonomy and direct control. |
| Oxygen Plant Operator | Manufacturing | HS diploma | 62,000 (Indeed, 2024) | Operate air separation and gas production equipment for industrial gas suppliers; good for those who like technical plant operations. |
| Oilfield Operator | Energy | HS diploma | 60,000 (Indeed, 2024) | Run drilling and production equipment on oil and gas sites for energy companies; hands-on, often remote work for industrial workers. |
| Oil and Gas Lease Operator | Energy | HS diploma | 58,000 (Payscale, 2024) | Monitor and manage oil/gas wells and leases for energy firms or operators; practical role within upstream energy operations. |
| Optical Technician | Manufacturing/Retail | Cert. | 42,000 (Payscale, 2024) | Assemble, repair, and maintain optical instruments or eyewear in labs and retail shops; good for precision-oriented technicians. |
| Outreach Librarian | Library/Nonprofit | Master | 54,000 (ALA data, 2023) | Develop programs to bring library services into communities or schools; combines librarianship with public engagement. |
Descriptions
Occupational Therapist
Occupational Therapy Assistant
Ocularist
Ophthalmologist
Optometrist
Optician
Ophthalmic Technician
Optical Engineer
Operations Manager
Operations Director
Operations Research Analyst
Operations Analyst
Operations Coordinator
Operations Specialist
Oral Surgeon (Oral & Maxillofacial Surgeon)
Orderly
Ombudsman
Oncologist
Oncology Nurse
Onboarding Specialist
Online Content Manager
Online Marketing Manager
Onsite Technician
Open-Source Developer
Open-Pit Mine Operator
Operating Room Nurse (OR Nurse)
Operations Technician
Orchestra Librarian
Orchestra Manager
Orchestral Musician
Ordination Secretary (Parish Secretary)
Ordnance Technician
Organic Farmer
Organizational Development Consultant
Organist
Orientation Leader
Ornithologist
Orthodontist
Orthopedic Surgeon
Orthopedic Nurse
Orthopedic Technician
Orthotist
OSHA Compliance Specialist
Osteopath (Doctor of Osteopathic Medicine, DO)
Outdoor Educator
Outdoor Guide
Outside Sales Representative
Outlet Store Manager
Outreach Coordinator
Outreach Worker
Owner/Operator (Small Business)
Oxygen Plant Operator
Oilfield Operator
Oil and Gas Lease Operator
Optical Technician
Outreach Librarian