Frank Gannon (disambiguation)
Frank Gannon is an Irish molecular biologist. Frank Gannon may also refer to:

 Frank Gannon, aide to U.S. President Richard Nixon and NBC television producer who had a relationship with Diane Sawyer
 Frank Gannon, co-founder in 1993 of Tugan Aircraft
 Frank Gannon, P.I. P.I., fictional character in the television program Saturday Night Live