| Erica Hahn | |
|---|---|
| Grey's Anatomy character | |
 Brooke Smith as Dr. Erica Hahn | |
| First appearance | "17 Seconds" (2.25) May 14, 2006 (as recurring cast) "Haunt You Everyday" (4.05) October 25, 2007 (as series regular) |
| Last appearance | "Rise Up" (5.07) November 6, 2008 |
| Created by | Shonda Rhimes |
| Portrayed by | Brooke Smith |
| In-universe information | |
| Title | M.D. F.A.C.S. |
| Occupation | Attending cardiothoracic surgeon at Seattle Grace Hospital |
| Significant other | Callie Torres (ex-girlfriend) |
Erica Hahn, M.D., F.A.C.S. is a fictional character from the American Broadcasting Company (ABC) medical drama television series Grey's Anatomy, portrayed by actress Brooke Smith. Hahn was a recurring character through the show's second and third seasons, and joined the main cast in the fourth season. Prior to assuming the role, Smith observed heart surgery being performed, and admitted to finding it stressful to continually portray a medical professional realistically.
The character is presented as highly professional, to the point of being a "workaholic". She is notably hard on Resident Cristina Yang (Sandra Oh), admitting that Cristina reminds her of herself as a student. Despite her intentions to keep away from relationships, she becomes romantically involved with orthopedic surgeon Callie Torres (Sara Ramirez). The storyline was praised for its realistic portrayal of a developing same-sex relationship between two women, although consultants from the Gay & Lesbian Alliance Against Defamation expressed some concerns over what they deemed the somewhat exploitative talk of a threesome between Hahn, Torres and Mark Sloan. Hahn was written out of Grey's Anatomy in November 2008, with Smith commenting that the decision originated with the ABC network rather than with series creator Shonda Rhimes.