Arne Wilhelm Grahn (22 January 1902 – 21 November 1989) was a Finnish tennis player.

He competed in the men's singles and doubles events at the 1924 Summer Olympics.

[2] Grahan played his first tournament in 1923 at the Götheborg Games, the same year won his first singles title at the Finland National Championships an event he would win nine times.

In 1930 he reached the quarter-finals of the Cannes New Courts Club tournament losing to Bill Tilden.

In 1938 he was a losing finalist at the Monte Carlo Championships Consolation tournament.