Marion Peak is a remote 12,719-foot-elevation (3,877-meter) mountain summit located in Kings Canyon National Park, in Fresno County of northern California, United States.

[3] It is situated on Cirque Crest which is west of the crest of the Sierra Nevada mountain range, 2.13 miles (3.43 km) northeast of State Peak, and 2.6 miles (4.2 km) northwest of Arrow Peak, the nearest higher neighbor.

The first ascent of the summit was made July 22, 1902, by Joseph Nisbet LeConte and Curds Lindley via the east slope.

[8] Most weather fronts originate in the Pacific Ocean, and travel east toward the Sierra Nevada mountains.

As fronts approach, they are forced upward by the peaks, causing them to drop their moisture in the form of rain or snowfall onto the range (orographic lift).