John Glen Williams (27 May 1946 – 12 August 1978)[1] was an English motorcycle short-circuit road racer who also entered selected Grands Prix on the near-continent.

[2] Williams died in Northern Ireland, following an accident when racing at an event held on closed public roads near Dundrod.

[5] Sadly, having led the race throughout, he ran out of petrol within sight of the chequered flag, pushing his bike across the line to finish seventh.

[5] Williams turned down the offer of a place on the factory-backed Texaco Heron Suzuki team in 1977, preferring to race as a privateer, although well-publicised differences between himself and Barry Sheene may have been a contributing factor.

[7] Williams won the 500 cc race in the 1978 Ulster Grand Prix, but died from injuries suffered after crashing at Wheeler's Corner in the inaugural TT Formula One event later that same day.