Jack McBrayer ♊ Gemini Jack McCulloch ♌ Leo Jack McDevitt ♈ Aries Jack McDonald (ice hockey, born 1887) ♓ Pisces Jack McInerney ♌ Leo Jack Medica ♎ Libra Jack Mercer ♒ Aquarius Jack Mulhall ♎ Libra Jack Murdoch ♋ Cancer Jack Nance ♐ Sagittarius Jack Nicholson ♉ Taurus Jack Nicklaus ♒ Aquarius Jack Nitzsche ♉ Taurus Jack Northrop ♏ Scorpio Jack Noseworthy ♐ Sagittarius Jack O'Halloran ♈ Aries Jack Oakie ♏ Scorpio Jack Osbourne ♏ Scorpio Jack Owen ♐ Sagittarius Jack Paar ♉ Taurus Jack Palance ♒ Aquarius Jack Parsons ♎ Libra Jack Pickersgill ♋ Cancer Jack Pickford ♌ Leo Jack Portland ♌ Leo Jack Purcell ♑ Capricorn Jack Quaid ♉ Taurus Jack R. Lousma ♓ Pisces Jack Ragland ♎ Libra Jack Ramsay ♓ Pisces Jack Reynor ♒ Aquarius Jack Rodewald ♒ Aquarius Jack Rodwell ♓ Pisces Jack Ruby ♉ Taurus Jack Scalia ♏ Scorpio Jack Schlossberg ♑ Capricorn Jack Sharkey ♏ Scorpio Jack Sherman ♑ Capricorn Jack Sholder ♊ Gemini Jack Sikma ♏ Scorpio Jack Smight ♓ Pisces Jack Sock ♎ Libra Jack Sonni ♐ Sagittarius Jack Steinberger ♊ Gemini Jack Straw ♌ Leo Jack Studnicka ♒ Aquarius Jack Swigert ♍ Virgo Jack Teagarden ♌ Leo Jack Thayer ♑ Capricorn Jack Tramiel ♐ Sagittarius Jack Trout ♒ Aquarius Jack Tunney ♒ Aquarius Jack Twyman ♍ Virgo Jack Ulrich ♋ Cancer Jack Valenti ♍ Virgo Jack Vance ♍ Virgo Jack W. Szostak ♏ Scorpio Jack Walker ♉ Taurus Jack Walter ♏ Scorpio Jack Warden ♍ Virgo