Daniëlle Harmsen (born January 25, 1986 in Velsen) is a retired Dutch tennis player.
She won five singles and thirty-three doubles titles on the ITF circuit in her career.
Harmsen retired from professional tennis 2013.
On 4 October 2010, she reached her highest WTA singles ranking of 406 whilst her best doubles ranking was 213 in September 2012.