Andrew "Antti" William Kosola (March 4, 1896 – April 14, 1971[1]) was a Finnish American accordionist, pianist, bandleader and composer.

Born in Wisconsin, Kosola was in the 1920s and 1930s a very well-known musician on the Finnish American stages in New York City.

Some recordings were made with his orchestra and with several notable Finnish American singers, for example Leo Kauppi, Hiski Salomaa, Hannes Saari, Ernest Paananen and others.

He also performed together with the famous Finnish American musicians Viola Turpeinen, Sylvia Polso and William Syrjälä.

One of Kosola's most successful records was the waltz Meren aallot ("Waves of the sea"), which he composed and to which Leo Kauppi wrote the lyrics.