The Swedish Swimming Championships (Swedish: Svenska Mästerskapen i simning, SM i simning, Sim-SM, Långbane-SM) are held annually in the Swedish summer in outdoor 50 m pool.

Swimmers representing Swedish swim teams may participate.

Since 1988 the Senior's and Junior's Swedish Championships are hosted together with timed finals for the Junior's in the morning together with the prelims for the older swimmer.

The swimmer with the most individual gold medals is Anders Holmertz with 39 titles, before Therese Alshammar with 34, Arne Borg with 30, Lars Frölander with 27 titles and Robert Andersson with 24 titles.

Of them, Therese Alshammar and Lars Frölander are the only swimmer still active.