World Inventer

 Frank McNamara may refer to:

• Frank McNamara (musician), Irish arranger, conductor, composer, and pianist
• Frank McNamara (RAAF officer) (1894–1961), Australian Victoria Cross recipient and air force officer
• Frank L. McNamara Jr. (born 1947), United States Attorney for the District of Massachusetts from 1987 to 1989
• Frank X. McNamara, founder of Diners Club with Schneider