Brodie Grundy (born 15 April 1994) is a professional Australian rules footballer playing for the Sydney Swans in the Australian Football League (AFL). He was previously an All-Australian and best-and-fairest winner with Collingwood, having been selected with the 18th draft pick in the 2012 AFL draft, as well as a player for Melbourne.

Grundy was born in Adelaide, South Australia and attended Cabra Dominican College, a private Catholic high school in the southern suburbs of the city, graduating in 2011. A former basketball player, Grundy switched to Australian rules football in 2010. A premiership player for the Unley Jets Football club in the Under 16.5's 2010 Grand Final win over Edwardstown. Brodie has a younger brother, Riley, who was drafted to Port Adelaide with pick 73 in the 2018 draft.

Following a successful season playing as a ruckman with South Australian National Football League (SANFL) club Sturt's junior teams, Grundy was recruited by Collingwood with draft pick #18 in the 2012 AFL draft.

Grundy was the Round 22 nomination for the 2013 AFL Rising Star award.

In March 2014, Grundy signed a three-year contract extension lasting until the end of the 2017 AFL season.

In 2018 he won the Herald Sun Player of the Year award with 27 votes, one clear of Melbourne ruck Max Gawn and Hawthorn midfielder Tom Mitchell. Grundy also won the Copeland medal for Collingwood's best and fairest in 2018, drawing with Steele Sidebottom.

After another All-Australian season in 2019, Grundy signed a seven-year, $1 million per-year deal with Collingwood. However, Grundy struggled to recapture his All-Australian form in subsequent years, with his salary criticised by some media figures.

At the end of the 2022 AFL season, Collingwood traded Grundy to Melbourne for salary cap relief.