He appeared for United alongside his brother Geoff and made 261 appearances for the Pilgrims between 1955 and 1961.
The Hazledines both played in the Pilgrims' memorable 6-1 FA Cup victory at their former club Derby County in 1955.
Don made a return to The Jakemans Stadium in April 2010 as the club's United Legend guest (pictured alongside Shaun Pearson). Geoff passed away in 2002.
The thoughts of Boston United are with the Hazledine family at this sad time.