2009 All-Ireland Senior Ladies' Football Championship

The 2009 All-Ireland Senior Ladies' Football Championship was held between July 26 and September 27, 2009. Cork were the winners for the fifth season in a row.

Structure

 * Sixteen teams compete.
 * The top four teams from 2008 receive byes to the quarter-finals.
 * The quarter-finalists from 2008 receive byes to the second round.
 * The other eight teams play in the first round.
 * All games are knockout matches, drawn games being replayed.
 * The first-round losers playoff, with one team being relegated to the intermediate championship for 2010. Teams must spend two years as a senior team before they are eligible for relegation; teams that have not done so are exempt from relegation.

Relegation match
Tipperary and Leitrim were exempt from relegation.

Donegal are relegated to the Intermediate Ladies' Football Championship for 2010.