Philippe Seydoux (b: 23 January 1985) is a Swiss professional ice hockey player with EHC Biel of the Swiss Nationalliga A.
Born in Bern, Switzerland, Seydoux played junior with SC Bern from 2000 until 2003. His play attracted the attention of the NHL's Ottawa Senators, who drafted him in the third round (100th overall) in the 2003 NHL Entry Draft. He then moved to EHC Kloten where he played with the Kloten junior team as well as part-time with the professional team. He became a full-time member of the professional team in 2004. In 2006, he moved to Fribourg-Gottéron and in 2009 he moved to EHC Biel where he has played since