| Graham Calder Mullen | |
| Office: | Senior Judge of the United States District Court for the Western District of North Carolina |
| Term Start: | December 1, 2005 |
| Office1: | Chief Judge of the United States District Court for the Western District of North Carolina |
| Term Start1: | 1998 |
| Term End1: | 2005 |
| Predecessor1: | Richard Lesley Voorhees |
| Successor1: | Robert J. Conrad |
| Office2: | Judge of the United States District Court for the Western District of North Carolina |
| Term Start2: | September 11, 1990 |
| Term End2: | December 1, 2005 |
| Appointer2: | George H. W. Bush |
| Predecessor2: | James Bryan McMillan |
| Successor2: | Martin Karl Reidinger |
| Birth Name: | Graham Calder Mullen |
| Birth Place: | Charlotte, North Carolina, U.S. |
| Education: | Duke University (BA, JD) |
Graham Calder Mullen (born 1940) is a senior United States district judge of the United States District Court for the Western District of North Carolina.
Mullen was born in Gastonia, North Carolina. He received a Bachelor of Arts degree from Duke University in 1962 and a Juris Doctor from Duke University School of Law in 1969. He was a lieutenant in the United States Navy from 1962 to 1966. He was then in private practice in Gastonia, North Carolina from 1969 to 1990.
On February 20, 1990, Mullen was nominated by President George H. W. Bush to a seat on the United States District Court for the Western District of North Carolina vacated by Judge James Bryan McMillan. Mullen was confirmed by the United States Senate on September 10, 1990, and received his commission on September 11, 1990. He served as Chief Judge from 1998 to 2005. He assumed senior status on December 1, 2005.