Franklin Otto Weddig (November 1, 1944 – October 26, 2012) was an American politician from Aurora, Colorado. He was a Colorado State Senator from 1994 to 2000 and a State Representative from 2000 to 2004. He served as an Arapahoe County commissioner from 2004 to 2012. He was a member of the Democratic Party.
Frank Weddig was born in West Bend, Wisconsin and was an electrician by trade. He was married to Patrica, and had three daughters.