Michael Isaac "Zac" Williams (born 27 March 2004) is a Welsh professional footballer who plays as a defender for club Barnet. He is a Wales Under-21 International.
Club career Crewe Alexandra He made his Crewe debut, aged 17, on 9 November 2021 in an EFL Trophy group game against Wolverhampton Wanderers' under-21s at Gresty Road, before making his league debut in the following game, a 2–0 defeat at Bolton Wanderers. He made his first start in Crewe's next game, helping the side to a 2–0 win over Gillingham at Gresty Road on 20 November 2021, and then enjoyed a run of games as one of Crewe's first choice centre-backs until falling ill in January 2022. He returned to first-team action, coming on as a half-time substitute for Travis Johnson against Portsmouth at Gresty Road, on 8 March 2022.
In May 2022, Williams signed a new contract at Crewe. After 19 first-team appearances the following season, Williams suffered a torn hamstring which was initially thought likely to rule him out of action for the remainder of the season. However, he returned to the first team on 29 April 2023, making a substitute appearance in Crewe's 2–1 win over Swindon Town at Gresty Road. Williams scored his first Crewe goal, in a 2–2 draw against Swindon at the County Ground, on 12 August 2023.
In early 2024, Williams missed a series of games after incurring an ankle injury which required prolonged treatment. He returned to regular training at the end of February 2024. In May 2024, Crewe triggered a clause for an extension in Williams' contract,
In July 2025 Crewe offered Williams a new contract, which he did not immediately accept. In August 2025 he agreed a new deal with Crewe but was immediately loaned to Kilmarnock.
Kilmarnock (loan) On 12 August 2025, Williams joined Scottish Premiership Kilmarnock on loan for the 2025-26 season. He made his debut for Kilmarnock on 14 September 2025 in the 2–1 Scottish Premiership defeat to Celtic.Williams Kilmarnock debut
On 13 May 2026, Crewe said he would be released in the summer when his contract expired.
Barnet On 2 June 2026, Barnet announced that they had signed Williams ahead of the 2026-27 season.https://barnetfc.com/bees-welcome-williams
International career After winning caps at under-15 and under-16, captaining the team for the latter, he played for the Wales under-18s in March 2021 against England before winning a second cap against the same opposition in September of the same year.
Williams was called up to the Wales under-19s squad for the 2022 UEFA European Under-19 Championship qualifiers against Georgia, Norway and Kosovo, and made appearances against the latter two in October 2021. He earned three further under-19 caps, playing as captain against Hungary and Republic of Ireland, and, after coming on as a second-half substitute, scoring against Gibraltar, in 2023 UEFA European Under-19 Championship qualifiers on 21, 24 and 27 September 2022 respectively.
Career statistics
ClubSeasonDivisionLeagueNational cupLeague cupOtherTotalAppsGoalsAppsGoalsAppsGoalsAppsGoalsAppsGoalsCrewe Alexandra2021–22League One1900000102002022–23League Two1801010202202023–24League Two3221020203722024–25League Two4111010204512025–26League Two0000000000Total11333040701243Kilmarnock (loan)2025–26Scottish Premiership7000100080Barnet2026–27League Two4100101061Career total12443060801384
References