Sinan Demircioğlu (born 23 April 1975) is a Turkish retired footballer.

Sinan Demircioğlu started his career at Beşiktaş which is one of the Turkish Big-Three.

Before that, he also played for the youth teams at PAF League and BAL Ligi.

Sinan Demircioğlu returned to the Turkish top division in 2002–03 season, signed for Göztepe.

He just played 16 times in his second season before he left the club as free agent.