Råcksta Träsk (Swedish: "Råcksta Swamp") is a small lake in the western suburbs of Stockholm, Sweden. Notwithstanding its location in the vicinity of the Swedish capital and high levels of lead and copper, the lake is considered as an important breeding ground for frogs, of moderate interest to pleasure fishing, and of minor interest for birds. There are three other small lakes located nearby: Judarn, Kyrksjön, and Lillsjön.

Råcksta träsk ligger i västerort i Stockholm och ingår i Grimsta naturreservat, som bildades 2004.