William G. Folden (born April 5, 1972) is an American politician who is currently a Republican member of the Maryland Senate, representing District 4 since 2023.

In September 2021, he withdrew his bid for delegate and entered the Senate race in District 4 for the seat being vacated by Michael Hough.

He served in this position until January 9, 2019, after being defeated by Democratic challenger Ken Kerr in the 2018 Maryland House of Delegates election.

[12] During the 2017 legislative session, Folden introduced a bill that would allow military members to end their housing leases early if deployed or called to a new duty station.

[17] During the 2018 legislative session, Folden introduced a bill that would train emergency responders on how to properly handle interactions with veterans affected by trauma.

[21] During the 2017 legislative session, Folden introduced a bill that would make it illegal to drive in the far left lane of a highway unless the driver was passing another vehicle.