Walter Allen Stosch (born August 18, 1936, in Fredericksburg, Virginia) is an American politician in the Republican Party. He served in the Virginia House of Delegates from 1983 until 1992, when he was elected to the Senate of Virginia. He was Majority leader 1998–2007, after which he was named Republican Leader Emeritus. He served as the President Pro Tempore of the Senate for his final term, except for a six-month period when Democrats controlled the chamber. He represented the 12th district, made up of parts of Hanover and Henrico Counties. In 2009, responding to the request of constituent Em Bowles Locker Alsop, Stosch sponsored a monument to Virginia women in Capitol Square, which became law in 2010, and was unveiled in October 2018.