Airdrieonians Football Club, more commonly known as Airdrie, were a Scottish professional football team from the town of Airdrie, in the Monklands area of Lanarkshire.
The team was founded in Airdrie, North Lanarkshire in 1878 as Excelsior Football Club, changing its name to Airdrieonians in 1881. It was elected to the Scottish Football League in 1894. The club became defunct at the end of the Scottish Football League 2001/02 season, despite the team finishing as runners-up in the SFL First Division to Partick Thistle and therefore only narrowly missing out on promotion to the Scottish Premier League.
During their 124-year existence the "Diamonds", as they were nicknamed, won the old Scottish Division Two three times, the Spring Cup once and the Scottish Challenge Cup on three occasions. The club also competed in four separate Scottish Cup finals; winning the competition in 1924.
Airdrieonians were the first club in the Scottish League to fold since 1967, when Third Lanark went bankrupt.