Mount Blum, Mountain summit in North Cascades National Park, United States.

Mount Blum is a 7,685-foot (2,342 m) summit at the western edge of North Cascades National Park, the highest peak in a chain east of Mount Shuksan and west of the Picket Range. Two small active glaciers rest on its northern flank, and six glacial-fed tarns called the Blum Lakes occupy successive bowls on the southeast side. The mountain is composed of extremely firm granite, an intrusion common throughout the range and much stronger than the looser rock of Mount Shuksan and the Picket Range.

The peak was named after John Blum, a Forest Service fire patrol pilot who died in an airplane crash near Snoqualmie Pass in 1931. The name honors a dedicated forestry worker who served to protect the mountain wilderness.

The name Blum recurs across the mountain's features: Blum Creek drains its north and west sides into the Baker River, and the six glacial-fed tarns on the southeast side are called the Blum Lakes. Skiing is an occasional activity on the slopes, though the peak is nearly surrounded by trail-less wilderness.

The peak sits isolated from marked trails and is only reachable via the southern ridge connection to Mount Hagan. Visitors who attempt to reach this summit need advanced navigation skills and comfort traveling off-trail through mountain terrain.

The granite composition of Mount Blum differs from neighboring peaks, forming solid climbing surfaces unlike the loose rock found in Mount Shuksan and Picket Range.