Maidenhead United Football Club is a semi-professional English football club in Maidenhead, Berkshire. They currently play in the National League, the fifth tier of English football,.
The club was founded in 1870 and moved to their current ground at York Road the following year. The Football Association have acknowledged that it is the "oldest senior football ground continuously used by the same club".
The origins of senior football in Maidenhead can be traced back to October 1870 with the formation of Maidenhead Football Club, who subsequently played their first-ever fixture in December 1870 against Windsor Home Park on a site close to the River Thames. On 16 February 1871 the club played their first game on the York Road site against Marlow. The club were one of the original 15 entrants for the first-ever FA Cup competition in 1871–72. The following season they reached the last four before losing to Oxford University. Maidenhead reached the quarter-finals in the next two seasons, but in 1876 withdrew, returning the following season. They also entered the first-ever Berks & Bucks Cup competition in 1878 and the first FA Amateur Cup in 1893.