Port of Funagawa, Commercial seaport in Oga, Japan.

The Port of Funagawa is a seaport on the southern coast of the Oga Peninsula in Oga, Akita Prefecture, managed by Akita Prefecture. It has four berths: two 5,000-ton quays, one 7,000-ton quay and one 15,000-ton quay, with a total land area of 253.4 hectares. The Oga Marina, opened as Akita Prefecture's second marina after Honjō Marina, holds 160 boats on 2.4 hectares of land and 2.1 hectares of water.

The natural harbour was used by fishermen for centuries before the prefectural assembly budgeted a survey in 1892 and the Funagawa Chikkō Kisei Dōmeikai was formed in 1897 under Ōhinata Sakutarō. Construction began in June 1911, the first phase was completed in 1914, and facilities were largely finished by 1931. The port became a Major Port under the Ports and Harbours Law in 1951 and part of the Akita Bay New Industrial City in 1965.

The port hosts the Oga Nihonkai Fireworks Display, launched in 2003, and the Funagawa Port Festival; Oga Namahage Rock Festival is also held here. The nearby Oga Marina, Akita Prefecture's second marina after Honjo, has 160 berths and is registered as Oga Umi no Eki. The port area is registered as Minato Oasis Oga.

JR Oga Station is about a ten-minute walk from the port, not two kilometres. The port area holds Oga Marina, with 160 berths, and Oga Marine Park, whose ball field hosted the rugby matches of the 2007 Akita Wakasugi National Sports Festival. The marina is registered as Oga Umi no Eki.

The Akita National Petroleum Stockpiling Base, completed in 1995, holds 4.48 million kiloliters in 12 underground and 4 above-ground tanks. The underground tanks are buried in the port's reclaimed ground, so from the surface visitors see mostly low pump houses and pipework rather than a tank farm.