Frank Ed Mrvan Jr. (born April 11, 1933) is an American politician who served as a Democratic member of the Indiana Senate, representing the 1st District from 1979 to 1994 and again from 1998, until his retirement in 2022.

Known as Frank Ed Mrvan, Jr, he attended Washington High School in East Chicago.

Redistricting passed by the Indiana General Assembly in 2011 shifted the State Senate 1st district's boundaries, effective January 2013.

[4] In 2019 the younger Frank Mrvan decided to run for the Democratic nomination in Indiana's 1st congressional district to succeed Pete Visclosky, who was retiring after a long tenure in office.

Supported by Visclosky as his successor, Frank Mrvan won the Democratic nomination over 13 other candidates, and also defeated his Republican rival in the general election.