Jobs That Start With O

15 jobs Things, colors and jobs Checked 9 Oct 2026

Here are 15 jobs that start with O, each with a one-line description so you can tell what it is. The best-known ones come first, then the full list in A to Z order.

O jobs have a strong eye and ocean theme. Optician, optometrist and ophthalmologist all deal with eyes and vision, which can confuse spellers. Oceanographer studies the oceans, a dream job for many young sea lovers.

Music and art are well represented, with organist, opera singer and oil painter. Orthodontist straightens teeth with braces. Office manager and office boy work in offices. Ombudsman is the rare one, an official who looks into complaints. There are 15 O jobs in total.

Jobs starting with O: 15
Best known: office boy, orderly
Longest name: ophthalmologist

Best-known jobs that start with O

The ones most people will recognise, good for school lists, quizzes and games.

office boy
orderly
organist
oncologist
ophthalmologist
oil painter
oceanographer
office manager
opera singer
optician
optometrist
orthodontist

All jobs that start with O

#	Name	What it is
1	oceanographer	scientist who studies the oceans
2	office boy	a young man who is employed to do odd jobs in a business office
3	office manager	person who runs the daily work of an office
4	oil painter	a painter who uses oil paints
5	ombudsman	a government appointee who investigates complaints by private persons against the government
6	oncologist	a specialist in oncology
7	opera singer	singer who performs in operas
8	opera star	singer of lead role in an opera
9	ophthalmologist	a medical doctor specializing in the diagnosis and treatment of diseases of the eye
10	optician	person who makes and fits glasses and contact lenses
11	optometrist	eye care professional who tests vision
12	orderly	a soldier who serves as an attendant to a superior officer
13	organist	a person who plays an organ
14	orthodontist	dentist who straightens teeth with braces
15	overseer	a person who directs and manages an organization

Questions people ask

How many jobs start with O?

This list has 15 jobs starting with O, from well-known ones like office boy, orderly, organist to rarer kinds.

What jobs start with O?

Well-known examples are office boy, orderly, organist, oncologist, ophthalmologist, oil painter, oceanographer, office manager.

Source: Princeton WordNet, a public dictionary database, reviewed by our editors to keep only clear, real members of the list. Meanings are short dictionary glosses.

See every letter on one page: jobs A to Z