Charles Logan is a fictional character played by Gregory Itzin in the television series 24. During the show's fourth season, Logan is the American Vice President who is sworn into office as Acting President after President John Keeler is critically injured in a terrorist attack. Although Itzin physically resembles Richard Nixon and shares some of the same physical mannerisms, series creator Joel Surnow said in an interview with talk radio host Rush Limbaugh that the resemblance is purely a coincidence.

Itzin was nominated for a 2006 Supporting Actor Emmy Award for this role (losing to Alan Alda).