The Walthamstow midfielder made more than 300 league and cup appearances for the Hornets during two spells at the club from 1964 to 1978, either side of moves to Tottenham Hotspur and Charlton Athletic.
“We are deeply saddened to hear of the passing of our former midfielder Dennis Bond at the age of 77,” said Spurs on ‘X’, formerly Twitter.
“The thoughts of everyone at the club are with Dennis’ friends and family at this impossibly sad time.”
A Spurs fan as a child, Bond made his Watford debut as a 17-year-old in a 5-2 Division Three defeat at Gillingham in August 1964.
Described on the Watford FC Archive as a player "oozing class from a very early age", Bond soon became an integral part of the Watford side under Bill McGarry and Ken Furphy., making more than 100 appearances before he joined his boyhood club in March 1967 for what was then a Watford club record fee of £30,000.
Bond made just 27 first-team appearances in all competitions during his three years at White Hart Lane, moving across London to join Charlton Athletic in October 1970.
He then returned to Vicarage Road, initially on loan, in 1973 and was to miss only a handful of games in the next four seasons for Mike Keen’s side.
Bond made five appearances in Graham Taylor’s first season at Vicarage Road as he guided Watford to promotion to Division Three, the last of those being his 301st and final one for the club in a 3-2 victory over Southport in April 1978.
Bond then joined Dagenham on a free transfer and went on to play non-league football for clubs including Boreham Wood and Waltham Abbey before finally hanging up his boots at the age of 55.