Ian Heath Gershengorn (born February 21, 1967) is an American lawyer and former acting Solicitor General of the United States under President Barack Obama.

From 1994 until 1995, Gershengorn worked as a law clerk for United States Supreme Court Associate Justice John Paul Stevens.

[5] Gershengorn is listed in a Halland v. Brackeen amicus brief with Kathryn Fort, former Ambassador Keith M. Harper, Matthew S. Hellman, Zachary C. Schauf, Loenard R. Powell, Victoria Hall-Palerm, and Keven J.

[6][7] On April 13, 2009, it was announced that Gershengorn would be rejoining the United States Department of Justice as a deputy assistant attorney general in the Civil Division with oversight of the Federal Programs Branch.

[5] In his deputy assistant attorney general position, Gershengorn was known for his work in defending legal challenges to President Obama's signature legislative achievement, the Patient Protection and Affordable Care Act.