Tomasz Markowski (born 30 July 1975) is a Polish chess Grandmaster.

He won the Polish Chess Championship in 1993, 1998, 1999, 2003, and 2007. He also represented Poland five-times in Chess Olympiads.^[1] In 2000 he won a bronze medal at the European Individual Chess Championship in Saint-Vincent, Italy.^[2] Markowski won at Geneva (1995, 2000) and shared for fourth at the 2004 Aeroflot Open in Moscow.

Markowski was awarded the GM title in 1998.

According to Chessmetrics his best single performance was at POL-ch 60th Warsaw, 2003, where he scored 10,5 of 13 possible points (81%) against 2520-rated opposition, for a performance rating of 2700.^[3]

He was in the world top 100 list twice successively in July and October 2003 at rank 87 and 88, respectively, with a rating of 2610.^[4]

• Tomasz Markowski vs Joel Lautier, 2nd IECC Playoff g/15 2001, King's Indian Attack: Double Fianchetto (A07), 1–0
• Ilya Smirin vs Tomasz Markowski, Aeroflot Open 2002, Sicilian Defense: Kan, Wing Attack Fianchetto Variation (B43), 0–1
• Tomasz Markowski vs Sergei Movsesian, Bermuda-A 2003, King's Indian Attack: Double Fianchetto (A07), 1–0
• Tomasz Markowski vs Lorenz Maximilian Drabke, 5th Individual European Chess Championship 2004, Formation: King's Indian Attack (A07), 1–0