Gregory Koger (born c. 1970s) is a political scientist in the United States, specializing in the study of filibustering and obstructionism in American legislative bodies.

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (December 2011)

Koger was a legislative assistant to Congressman George R. Nethercutt. In that position, he served as a political advisor on a variety of issues, assisted in drafting legislation, and as a liaison to the Appropriations Subcommittee on Defense.

He received his Ph.D. from UCLA in 2002. He is the author of Filibustering: A Political History of Obstruction in the House and Senate, and is currently an assistant professor at the University of Miami.

• Filibuster
• Steven S. Smith