The 2009–10 season was Aston Villa's 135th professional season; their 99th season in the top-flight and their 22nd consecutive season in the top flight of English football, the Premier League. They were managed by Martin O'Neill – in his fourth season since replacing David O'Leary. The 2009–10 season was Villa's second consecutive spell in European competition for the club, and the first in the newly formatted UEFA Europa League.