PTO may refer to:

Entertainment

* ''P.T.O.'' (video game), a war strategy simulation series by Koei based on the World War II events * "P:T:O:", a track from the 1977 Klaus Schulze album '' Body Love'' * ''The Phantom of the Opera'' (adaptations), or the Phantom character from any of these * '' Please Turn Over'', a 1959 British comedy film * Promenade Theatre Orchestra, an English quartet founded in 1969

Organisations

* Patent and Trademark Office (disambiguation), a government office that handles the issuing of both patents and trademarks * Parent teacher organization, organization that consists of parents, teachers and school staff * Peace Train Organisation, a campaign group set up in response to the repeated bombing of the Dublin to Belfast railway line * Professional Triathletes Organisation, an organisation that representing non-drafting professional triathletes * Public Telecommunications Operator, a service provider of telecommunications services such as telephony and data communications access

Science and technology

* Parietal-temporal-occipital, an area of the brain * Permeability tuned oscillator, an electronic circuit; see 75A-4 and KWS-1#PTOsc * Power take-off, one of several methods for taking power from a power source

Other uses

* Public Transport Operator * Pacific Theater of Operations, several *

Paid time off Paid time off, planned time off, or personal time off (PTO), is a policy in some employee handbooks that provides a bank of hours in which the employer pools sick days, vacation days, and personal days that allows employees to use as the need or ...

, time an employee can draw from to take time off from work * Peeled tail-on shrimp * Permission to officiate, a form of license to undertake ecclesiastical duties within the Church of England * Phoenix Thunderbirds Open, a golf tournament on the LPGA Tour from 1962 to 1965 * "Please turn over", written at the bottom of a double-sided document, see list of acronyms: P#PT * Professional tryout, a type of hockey contract in professional ice hockey * Proof-theoretic ordinal, a concept in

ordinal analysis In proof theory, ordinal analysis assigns ordinals (often large countable ordinals) to mathematical theories as a measure of their strength. If theories have the same proof-theoretic ordinal they are often equiconsistent, and if one theory ha ...

that refers to an ordinal assigned to a mathematical theories to measure their strength. * Zo'é language (ISO 639-3 code: pto)

Entertainment

Organisations

Science and technology

Other uses

See also