Oat (disambiguation)

Oat may refer to:

• Oat (plural: oats), a cereal grain crop
• Ohio Achievement Test (before 2010, the Ohio Achievement Assessment was known as the Ohio Achievement Test)
• Optometry Admission Test, the widely used test for admission to a school of optometry
• Organic anion transporter, an organic anion-transporting polypeptide (OATP)
• Oxford Aviation Training at the Oxford Aviation Academy (OAA)
• Overseas Adventure Travel, an arranger of group travels for people in the USA to visit other countries
• Organic acid technology in antifreeze (see antifreeze#Organic acid technology)
• Obligation assimilable du Trésor (French treasury bond)
• Oral anticoagulant therapy, treatment with orally administered anticoagulants
• Oral antibiotic therapy, treatment with orally administered antibiotics
• Oral appliance therapy, treatment with an oral appliance
• Ornithine aminotransferase, the enzyme that enables conversion of ornithine to proline
• Occluded Artery Trial, a particular clinical trial (https://clinicaltrials.gov/ct2/show/NCT00004562)
• Operational acceptance testing, testing that shows that a product or service is ready to accept for operation
• Operational air traffic, in air traffic control
• Outside air temperature, the air temperature outside a vehicle or building (usually in reference to an aircraft)