Kathy Szeliga is an American politician who has served as a Republican member of the Maryland House of Delegates since January 12, 2011, and as Minority Whip from 2013 to 2021. Szeliga was the Republican nominee for the United States Senate in 2016 to replace Barbara Mikulski, who retired.

The Maryland House of Delegates is the lower house of the legislature of the U.S. state of Maryland. It consists of 141 delegates elected from 47 districts. The House of Delegates Chamber is in the Maryland State House on State Circle in Annapolis. The State House also houses the Maryland State Senate and the offices of the Governor and Lieutenant Governor of the State of Maryland. Each delegate has offices in Annapolis, in the nearby Casper R. Taylor Jr. House Office Building.