Blackburn Rovers Football Club is a professional football club based in Blackburn, Lancashire, England, which competes in the EFL Championship, the second level of the English football league system. They have played home matches at Ewood Park since 1890. The club's motto is Arte et Labore, meaning "By Skill and Hard Work" in Latin. They have a long-standing rivalry with nearby club Burnley, with whom they contest the East Lancashire derby.

Blackburn Rovers was founded in 1875, becoming a founding member of The Football League in 1888. They won five FA Cup finals in the 19th century: 1884, 1885, 1886, 1890 and 1891. The team was crowned English League champions in 1911–12 and 1913–14, then won a sixth FA Cup in 1928. They were relegated for the first time in 1936, but returned to the top-flight as Second Division champions in 1938–39. Relegated in 1948, Rovers secured promotion again in 1957–58, but were relegated in 1966 and again in 1971. Blackburn won the Third Division title in 1974–75, and were again promoted in 1979–80 after suffering relegation the previous year. They won the Full Members' Cup in 1987.

In 1992, Rovers gained promotion to the new Premier League via the play-offs, a year after being taken over by local entrepreneur Jack Walker, who installed Kenny Dalglish as manager. In 1994–95, Rovers became Premier League champions. Relegated four seasons after being crowned champions, they secured promotion at the end of the 2000–01 season, and won the 2002 Football League Cup Final the following year. They spent eleven successive seasons in the Premier League, but were relegated in 2012 and again into the third tier in 2017. Blackburn secured promotion out of League One at the end of the 2017–18 season.

The club was founded following a meeting, at the Leger Hotel, Blackburn, on 5 November 1875. The meeting was organised by two young men, namely John Lewis and Arthur Constantine, two old-boys of Shrewsbury School. The purpose of the meeting was "to discuss the possibility of forming a football club to play under Association rules". The first match played by Blackburn Rovers took place in Church, Lancashire on 18 December 1875 and was a 1–1 draw.

On 28 September 1878, Blackburn Rovers became one of 23 clubs to form the Lancashire Football Association. On 1 November 1879 the club played in the FA Cup for the first time, beating the Tyne Association Football Club 5–1. Rovers were eventually put out of the competition in the third round after suffering a heavy 6–0 defeat by Nottingham Forest.

On 25 March 1882 the club won through to the final of the FA Cup against the Old Etonians. Blackburn Rovers was the first provincial team to reach the final, but the result was a 1–0 defeat by the Old Etonians.

Rovers finally won the FA Cup on 29 March 1884 with a 2–1 victory over the Scottish team Queen's Park. The same teams played the FA Cup final again the next season, with Blackburn Rovers again emerging victorious, with a 2–0 score. Rovers repeated this success yet again the next season, winning the final replay 2–0 against West Bromwich Albion. For this three-in-a-row of FA Cup victories, the club was awarded a specially commissioned silver shield.

The 1885–86 season was the birth of the legal professional footballer, and Blackburn Rovers spent £615 on player wages for the season.