Put-in-Bay Airport (FAA LID: 3W2) is a public airport located in Put-in-Bay on South Bass Island in Ottawa County, Ohio, United States. The approach to Runway 21 is complicated by Perry's Victory and International Peace Memorial, which is almost exactly in line with the runway; pilots are asked to respect special procedures to avoid the monument. The airport is located in the center of the southern half of the island.

Put-in-Bay's airport is open year-round for arrivals and departures from dawn to dusk. Runways at the Put-in-Bay airport are paved but not lighted, so there are no departures after dusk.

There is no fuel service at the Put-in-Bay airport, but fuel may be purchased at Erie–Ottawa International Airport in Port Clinton. The Put-in-Bay airport provides charter services, refreshments (vending), and rest rooms.

The airport is mainly used to bring mail to the island as well as to bring passengers nearby islands and mainland Ohio. It is also home to three air tour operators who provide recreational trips from the airport.

The airport received a $22,000 grant in 2021 to provide economic relief funds for costs related to operations, personnel, cleaning, sanitization, janitorial services, debt service payments, and combating the spread of pathogens.