Thomas Greilinger (born 6 August 1981 in Deggendorf, West Germany) is German professional ice hockey forward. He currently plays for ERC Ingolstadt of the Deutsche Eishockey Liga. Greilinger made his DEL debut during the 1999–00 playoffs with the Munich Barons. The following season he played with the Schwenningen Wild Wings. Greilinger played three seasons with the Nuermberg Ice Tigers. He joined Ingolstadt in 2008.
Greilinger was selected to play for the German national team for the 2010 Winter Olympics.