Conor James Lamb (born June 27, 1984) is an American politician and attorney. He is also a former United States Marine. He is a member of the Democratic Party. He is the United States Representative for Pennsylvania's 18th congressional district upon being elected in March 2018 and took office on April 9, 2018.

Lamb was the Democratic candidate for Congress in Pennsylvania's 18th congressional district for 2018 special election. He ran against Republican Trump-backed State representative Rick Saccone. Lamb won with a narrow lead of 627 votes.

Lamb was a federal prosecutor in the U.S. Attorney's office in Pittsburgh, where he worked to fight the opioid epidemic by leading prosecutions of cases involving opioid-related deaths, violent crimes, and gun trafficking.

In August 2021, Lamb announced that he would be running for the United States Senate in the 2022 election.