Milton Higgins Arnold (born July 15, 1974) is an American former professional tennis player.

Raised in Providence, Rhode Island, Arnold attended Milton Academy in neighbouring Massachusetts and first played tennis at the age of eight.

[2] Arnold was named on the Ivy League First Team for doubles in each of his four seasons at Harvard (1994-1997).

As a senior in 1997 he and partner Thomas Blake earned All-American honors, reaching the NCAA doubles semi-finals.

Arnold made three doubles main draw appearances at the ATP Tour tournament in Newport.