Sideris Tasiadis (born 7 May 1990) is a German slalom canoeist of Greek descent who has competed at the international level since 2005.

He is the son of Greek immigrants who lived in Thrace, Greece in the village of Komara for 10 years during his childhood, before moving back to Germany.

He finished fifth in the C1 event four years later at the 2016 Summer Olympics in Rio de Janeiro.

[2] He also won six medals at the ICF Canoe Slalom World Championships with one gold (C1: 2022), four silvers (C1 team: 2010, 2011, 2013, 2015) and a bronze (C1: 2018).

[4] Tasiadis dated slalom canoeist Claudia Bär until her death in 2015 after a two-year battle with leukemia.