The Tricity Derby (Polish: Derby Trójmiasta) is the name given to football matches between Arka Gdynia and Lechia Gdańsk, the two biggest teams in the Tricity area in Pomeranian Voivodeship, Poland.

The first meeting between the two clubs was in 1964, and has been contested a total of 45 times since then.

Lechia have been the more successful of the two teams, winning 17 of the contests compared to Arka's 12.

Arka Gdynia has sympathisers from Wisła Tczew, Kaszubia Kościerzyna, Gryf Wejherowo, Orkan Rumia, MKS Władysławowo, Orlęta Reda, Stolem Gniewino, Piast Człuchów and Zatoka Puck.

[27] Lechia Gdańsk has friendships and/or sympathisers from Chojniczanka Chojnice, Bytovia Bytów, Gryf Słupsk, Pomezania Malbork, Czarni Pruszcz Gdański, KP Starogard Gdański, Unia Tczew, Wierzyca Pelplin and Olimpia Sztum.