Clayton Andrew Donaldson (born 7 February 1984) is a former professional footballer and manager who played as a striker. He is Head of Development at York City.

He has played in the English Football League and Scottish Premier League for Hull City, Hibernian, Crewe Alexandra, Brentford, Birmingham City, Sheffield United, Bolton Wanderers and Bradford City, and at senior international level for the Jamaica national team.

Donaldson started his career with Hull City in 2002, scoring on his first-team debut in the Football League Trophy later that year. He was sent out on loan to non-League clubs on four occasions, and with chances in the first team at Hull limited, he was released in 2005 and subsequently joined York City. In his first season at the club, he was voted as their Clubman of the Year and his second season saw him finish as the team's highest scorer and third highest scorer in the league.

He joined Scottish Premier League club Hibernian in July 2007, after signing a pre-contract agreement with them in January whilst with York. After a season at the club he left to return to England with Crewe Alexandra. After three years with Crewe, being the top goalscorer in League Two in his last season, he joined Brentford in 2011. He spent three years with the club, helping them gain promotion into the Championship in 2013–14, before signing for Birmingham City at the end of that season when his contract expired. After three seasons with Birmingham, he signed for another Championship club, Sheffield United, in August 2017. Spending just a year with the club, he moved to Bolton Wanderers in June 2018. He has since played in the lower league divisions of English football, with the likes of York, Gainsborough Trinity, and most recently, Farsley Celtic

Donaldson played internationally for the England National Game XI, who represent England at non-League level, with whom he earned two caps, before accepting an invitation to represent Jamaica in 2015.