The Little Luckiamute River is a stream in Polk County in the U.S. state of Oregon.

It rises in the Central Oregon Coast Range near Fanno Peak and joins the Luckiamute River about 4 miles (6 km) upstream of the Sarah Helmick State Recreation Site southwest of Monmouth.

For several miles starting at Black Rock, the George T. Gerlinger Experimental Forest is on the river's left.

Sam's Creek enters from the left about 1 mile (1.6 km) downstream of Black Rock.

[4][6] The upper river supports catch-and-release fishing for wild coastal cutthroat trout ranging in size from 6 to 13 inches (15 to 33 cm).