Gus (Russian: Гусь, lit. goose) is a river in Vladimir and Ryazan Oblasts, Russia. It is a left tributary of the Oka River.
The length of Gus River is 146 kilometers (91 mi).
The names of several inhabited localities locating along the river's bank are derived from the river's name (Gus-Khrustalny, Gusevsky, Gus-Zhelezny, Gus-Parakhino, Gusevsky Pogost).