Mrs. McDonald is Mac's mom.
Appearances
It's Always Sunny in Philadelphia
Guest cast, played by Sandy Martin
- Episode 2x04: Mac Bangs Dennis' Mom (Jul 6, 2006)
- Episode 3x10: Mac is a Serial Killer (Oct 18, 2007)
- Episode 3x11: Dennis Looks Like a Registered Sex Offender (Oct 25, 2007)
- Episode 4x06: Mac and Charlie Die Part 2 (Oct 2, 2008)
- Episode 5x05: The Waitress is Getting Married (Oct 15, 2009)
- Episode 6x06: Mac's Mom Burns Her House Down (Oct 21, 2010)
- Episode 6x13: A Very Sunny Christmas (Dec 16, 2010)
- Episode 8x06: Charlie's Mom Has Cancer (Nov 15, 2012)
- Episode 10x07: Mac Kills His Dad (Feb 25, 2015)
- Episode 10x10: Ass Kickers United: Mac and Charlie Join a Cult (Mar 18, 2015)
- Episode 12x03: Old Lady House: A Situation Comedy (Jan 18, 2017)
- Episode 13x03: The Gang Beats Boggs: Ladies Reboot (Sep 19, 2018)
- Episode 15x05: The Gang Goes to Ireland (Dec 15, 2021)
- Episode 16x02: Frank Shoots Every Member of the Gang (Jun 7, 2023)
- Episode 16x03: The Gang Gets Cursed (Jun 14, 2023)
- Episode 16x04: Frank vs. Russia (Jun 21, 2023)