Daniel Mark Nestor is a Canadian former professional tennis player.

Canada's Sébastien Lareau and Daniel Nestor defeated the defending gold medalists, Australia's Todd Woodbridge and Mark Woodforde, in the final, 5–7, 6–3, 6–4, 7–6(7–2) to win the gold medal in Men's Doubles tennis at the 2000 Summer Olympics. It was Canada's first men's doubles medal. The Woodies became the first pair to win multiple medals in the event, and the second and third individuals to do so. In the bronze medal match, Spain's Àlex Corretja and Albert Costa defeated South Africa's David Adams and John-Laffnie de Jager, 2–6, 6–4, 6–3. It was Spain's second medal at the event.