Pétur Guðmundsson is the name of:

• Pétur Guðmundsson (1786-1852), patriarch of the Engeyjarætt
• Pétur Guðmundsson (basketball) (born 1958), Icelandic basketball player
• Pétur Guðmundsson (athlete) (born 1962), Icelandic shotputter

• Bob Griffin (Shreveport, Louisiana)
• Bob Griffith
• Bob Griffiths
• Bob Griffiths (footballer)
• Bob Griggs
• Bob Grove
• Bob Groves
• Bob Grubbs
• Bob Gruenig
• Bob Grumman
• Bob Gude
• Bob Gulla
• Bob Haas (Canadian football)
• Bob Habenicht
• Bob Hager (politician)
• Bob Hahn
• Bob Haines
• Bob (hairstyle)
• Bob Hall (American political journalist)
• Bob Hall (Australian rules footballer)
• Bob Hall (basketball)
• Bob Hall (journalist)
• Bob Halloran (CBS sportscaster)
• Bob Hall (politician)
• Bob Halperin