Tomas Van Den Spiegel (born 10 July 1978 in Ghent, Belgium) is a Belgian former professional basketball player. He is a 2.14 m (7 ft ¼) tall center.
He first went through the youth ranks of Osiris Denderleeuw, then those of Okapi Aalst and debuted at age 17 in the Belgian first division. After an election in 1996 as Rookie of the year Van Den Spiegel then moved in 1997 to Sunair Oostende. With Oostende he won two championship titles and two cups. Van den Spiegel was elected in 2001 as Belgian basketball player of the year and then signed a three year contract with the Italian top club Fortitudo Bologna. After one and a half season with Virtus Roma he chose CSKA Moscow as his next destination. With Moscow Van Den Spiegel won the Euroleague in both 2006 and 2008. He was also a Euroleague runner-up in 2004 with Bologna and in 2007 with Moscow. Van Den Spiegel with CSKA also won three Russian titles and two cups. After two short stints with Prokom Trefl Sopot in Poland and Azovmash Mariupol in the Ukraine Van Den Spiegel later also played two seasons for Real Madrid. After a season start with Olimpia Milano in 2010, he moved back to the Belgian League by the beginning of 2011. Tomas signed a contract for 4.5 years at Telenet Oostende in March 2011. He announced retirement in July 2013.