Claes Arne Borg (18 August 1901 – 7 November 1987) was a Swedish swimmer.

In 1926 Borg won the Svenska Dagbladet Gold Medal, shared with Edvin Wide.

Besides swimming, Borg also won a European silver medal in water polo in 1926.

[2] At the end of his swimming career, Borg turned professional and toured with aquatic shows.

After that, he worked as a swimming coach and ran his tobacco shop in Stockholm.