The 2015 Brownlow Medal was the 88th year the award was presented to the player adjudged the fairest and best player during the AFL home and away season. Nat Fyfe of the Fremantle Football Club won the medal by polling thirty-one votes. He became the first Fremantle player to win the Brownlow Medal.
Matt Pridis from West Coast was runner up with 28 votes and Sam Mitchell of Hawthorn polled 26.
On 3 July 2015, the round 14 match between Adelaide and Geelong was cancelled following the death of Adelaide coach, Phil Walsh, resulting in players from those teams having one fewer game available to them to poll votes. The AFL decided that it wa no different to when players were away on interstate duty. The missing game ended up having no impact on the medal.