Walter Lowrie Weaver (April 1, 1851 – May 26, 1909) was an American lawyer and politician who served two terms as a U.S. Representative from Ohio from 1897 to 1901.

Born in Montgomery County, Ohio, Weaver attended the public schools and Monroe Academy, and was graduated from Wittenberg College, Springfield, Ohio, in 1870.

He studied law and was admitted to the bar in 1872 and commenced practice in Springfield, Ohio.

Weaver was elected prosecuting attorney of Clark County in 1874, 1880, 1882, and 1885.

After leaving Congress, he was appointed associate justice Choctaw-Chickasaw citizens' court at McAlester, Oklahoma, in 1902.