Colleen Kollar-Kotelly (born 1943 in New York) is a judge for the United States District Court for the District of Columbia and the presiding judge of the Foreign Intelligence Surveillance Court (FISC).

Kollar-Kotelly obtained her J.D. from The Catholic University of America's Columbus School of Law in 1968. From 1969 to 1972, Kollar-Kotelly was an attorney for the Department of Justice, after which she became chief legal counsel for St. Elizabeths Hospital.

In 1984, Kollar-Kotelly was appointed as an associate judge of the D.C. Superior Court. She served as deputy presiding judge from 1995 until her appointment to the federal bench by President Bill Clinton was confirmed in March 1997. In May 2002, Chief Justice William Rehnquist appointed Judge Kollar-Kotelly to serve as the presiding judge of the FISC.