This page brings together 21 professions that start with the letter O, ranging alphabetically from “Obstetrician” to “Outside Sales Representative.” These careers span many different fields, including healthcare, science, business, the arts, and sales. Some focus on caring for people, while others center on managing operations, studying the world, or creating and performing music.

Professions are the specific jobs and careers that people train for and pursue to earn a living and contribute their skills to society. Each one comes with its own duties, working conditions, and path of study. Interestingly, many of the oldest medical professions, like obstetrics, trace their roots back thousands of years to ancient Egypt and Greece.

Below you’ll find the table with Profession, Industry, Average Salary (USD), Required Education, and Description.

Profession: This gives you the official name of the job, so you can quickly scan the list and find the careers that interest you most.

Industry: This tells you the broader field each job belongs to, helping you see whether a role fits into healthcare, business, science, or another area.

Average Salary (USD): This shows you the typical yearly pay for each role, giving you a realistic sense of what you might earn in that career.

Required Education: This explains the level of schooling or training you generally need, so you can plan the right path toward the job you want.

Description: This offers a short, plain summary of what each professional actually does day to day, making it easy to understand the role at a glance.

Professions

ProfessionIndustryAverage Salary (USD)Required Education
ObstetricianHealthcare$240,000Doctoral (MD/DO)
Occupational TherapistHealthcare$93,000Master’s Degree
Occupational Health NurseHealthcare$80,000Bachelor’s Degree
OceanographerScience$85,000Master’s Degree
Office ManagerAdministration$58,000Associate Degree
Office AdministratorAdministration$45,000High School Diploma
Operations ManagerBusiness$98,000Bachelor’s Degree
Operations AnalystFinance$72,000Bachelor’s Degree
Operations Research AnalystBusiness$83,000Master’s Degree
OphthalmologistHealthcare$300,000Doctoral (MD/DO)
OpticianHealthcare$42,000Postsecondary Certificate
OptometristHealthcare$130,000Doctoral (OD)
OrchestratorArts$55,000Bachelor’s Degree
OrderlyHealthcare$33,000High School Diploma
OrganistArts$48,000Bachelor’s Degree
OrthodontistHealthcare$260,000Doctoral (DDS/DMD)
Orthopedic SurgeonHealthcare$500,000Doctoral (MD/DO)
OrthotistHealthcare$78,000Master’s Degree
OsteopathHealthcare$230,000Doctoral (DO)
OtolaryngologistHealthcare$390,000Doctoral (MD/DO)
Outside Sales RepresentativeSales$65,000Bachelor’s Degree

Descriptions

Obstetrician
A physician who specializes in pregnancy, childbirth, and the postpartum period, often working alongside gynecology to care for women’s reproductive health.
Occupational Therapist
A healthcare professional who helps patients recover or develop the skills needed for daily living and working after injury, illness, or disability.
Occupational Health Nurse
A nurse who promotes worker safety and wellness within a company, managing workplace injuries, health screenings, and prevention programs.
Oceanographer
A scientist who studies the ocean’s physical, chemical, and biological processes, from currents and tides to marine ecosystems and seafloor geology.
Office Manager
A professional who oversees the daily administrative operations of an office, coordinating staff, supplies, scheduling, and workflow.
Office Administrator
A support professional who handles clerical duties such as filing, correspondence, scheduling, and recordkeeping to keep an office running smoothly.
Operations Manager
A leader responsible for overseeing the production of goods or services, improving efficiency, managing budgets, and coordinating teams.
Operations Analyst
A professional who examines a company’s internal processes and data to recommend improvements in efficiency, cost, and performance.
Operations Research Analyst
An analyst who uses mathematical modeling and statistics to help organizations solve complex problems and make better operational decisions.
Ophthalmologist
A medical doctor who specializes in eye and vision care, diagnosing and treating eye diseases, performing surgery, and prescribing corrective lenses.
Optician
A technician who fits and dispenses eyeglasses and contact lenses based on prescriptions written by optometrists or ophthalmologists.
Optometrist
An eye care professional who examines vision, prescribes corrective lenses, and detects eye conditions, though they do not perform major surgery.
Orchestrator
A musician who arranges musical compositions for an orchestra, assigning parts to instruments to achieve the composer’s intended sound.
Orderly
A hospital support worker who assists with moving patients, transporting equipment, and maintaining a clean and safe care environment.
Organist
A musician who specializes in playing the organ, frequently performing in churches, concert halls, and for ceremonial events.
Orthodontist
A dental specialist who corrects misaligned teeth and jaws using braces, aligners, and other devices to improve bite and appearance.
Orthopedic Surgeon
A surgeon who specializes in the musculoskeletal system, treating bones, joints, ligaments, and muscles through surgery and other therapies.
Orthotist
A healthcare professional who designs and fits braces and supportive devices to assist patients with weakened or injured limbs and joints.
Osteopath
A physician trained in osteopathic medicine who emphasizes whole-body care and may use hands-on manipulation alongside conventional treatment.
Otolaryngologist
A specialist physician, also called an ENT, who diagnoses and treats disorders of the ear, nose, throat, head, and neck.
Outside Sales Representative
A salesperson who travels to meet clients in person, building relationships and closing deals outside of the company’s offices.
If you think there is a missing term, let us know using the contact form.