Lake trout (Salvelinus namaycush) is a species of char.

Lake trout or Lake Trout may also refer to:

• Lacustrine (lake-dwelling) populations of other species, especially brown trout
• Lake trout (seafood), fried Atlantic whiting
• Lake Trout (band), an American rock band

• Salvelinus umbla, lake char
• Trout Lake (disambiguation)