Siniša Štemberger (born April 23, 1979) is a Croatian professional basketball player currently playing for in the Croatian second-tier Prva muška liga. He previously played for and served as an assistant coach for Kvarner 2010. During his career he played for Croatian and Bosnian clubs with the exception of the Slovakian where he spent the 2011-12 season. He signed with Zapruđe on March 17, 2022. He holds the record of most scored 3-point shots in ABA League.