The 2019 AFL season was the 123rd season of the Australian Football League (AFL), the highest level senior men's Australian rules football competition in Australia, which was known as the Victorian Football League until 1989. The season featured eighteen clubs, ran from 21 March until 28 September, and comprised a 22-game home-and-away season followed by a finals series featuring the top eight clubs.

The premiership was won by the Richmond Football Club for the twelfth time, after it defeated Greater Western Sydney by 89 points in the 2019 AFL Grand Final.

There were several alterations to the laws of the game in 2019:

The pre-season began with the 2019 AFLX tournament, the second and, as of 2024, latter AFLX event featuring AFL players. Unlike the 2018 competition, it was not contested by the clubs, but rather by four all-star teams selected by their captains: Patrick Dangerfield (captain of the Bolts), Nat Fyfe (Flyers), Jack Riewoldt (Rampage), and Eddie Betts (Deadlys, composed entirely of Indigenous players). The tournament occurred at Marvel Stadium, Melbourne on 22 February 2019 and was won by the Rampage.

This was followed by the pre-season series of games, known as the 2019 JLT Community Series, with teams playing two games each. The games were stand-alone, with no overall winner of the series. Each team played two games, many at suburban or regional venues, while all games were televised on Fox Footy.

Notable features of the draw included:

2019 marked the first year of games being broadcast in 4K resolution, with a total of 46 ultra-high-definition games being shown on Foxtel.

Bold – Home game
X – Bye
Opponent for round listed above margin