Shaun Williams is an Irish professional footballer who plays as a defensive midfielder for English League Two club Gillingham, whom he also captains. He has previously played for Drogheda United, Finn Harps, Sporting Fingal, MK Dons, Millwall and Portsmouth. He represented the Republic of Ireland national team at various levels, gaining three caps for the senior team in 2018.

Gillingham Football Club is a professional association football club based in the town of Gillingham, Kent, England. The only Kent-based club in the Football League, the "Gills" play their home matches at Priestfield Stadium. The team competes in League Two, the fourth tier of the English football league system, in the 2023–24 season.