Peter O. Knight Airport (IATA: TPF, ICAO: KTPF, FAA LID: TPF) is an airport on Davis Islands, five minutes (3 NM or 5.6 km or 3.5 mi) from downtown Tampa, Florida. Built as a Works Progress Administration project, it was Tampa's main airport from 1935 to 1945, and is still used by general aviation operators today because of its proximity to the central city. The airport was named for prominent attorney and businessman Peter O. Knight, namesake of Holland & Knight.

The airport's original administration building was torn down in the 1960s and replaced by the current building. Although seaplanes aren't as popular anymore, the basin is still there at Davis Islands.

In June 2004, the local fixed-base operator (FBO) was sold by Tampa Flying Service and is now operated by Atlas Aviation.

The residents of Davis Island, where the airport is located, have complained about the noise and appearance of the facilities. The current plan is to extend the northeast end of the runway by 65 ft (20 m) and add 175 ft (53 m) to the south end of the runway. During a meeting on September 18, 2007, some residents voiced concerns about larger aircraft using the longer runway and any related increase in the volume of noise generated there.

Sound tests conducted by the Aviation Authority showed an increase of 3 dB or less over current usage at the closest residences, or an average of about 58 dB during run ups to take off.