Glendo Reservoir is a reservoir located on the North Platte River in Platte County and Converse County in the U.S. State of Wyoming.

The reservoir is formed by Glendo Dam.

[1] The reservoir retains a maximum of 1,170,505 acre-feet (1.443797×109 m3) of water used primarily for irrigation and flood control.

The reservoir is popular for water sports and fishing.

It is located completely within Glendo State Park.