Harold Priestley "Hal" Gill III (born April 6, 1975) is an American professional ice hockey defenseman and an alternate captain of the Montreal Canadiens of the National Hockey League (NHL).
Before college, Gill was a notable quarterback at Nashoba Regional High School in Bolton, Massachusetts.
After being drafted in the eighth round, 207th overall in the 1993 NHL Entry Draft by the Boston Bruins, Gill spent four years playing for Providence College. He entered the NHL during the 1997–98 NHL season and played over 600 regular season games over eight seasons with the Bruins. During the canceled 2004–05 NHL season, Gill played for Lukko in the Finnish SM-liiga.