Windy Hill (officially known as Essendon Recreation Reserve) is an Australian rules football and cricket ground located in Napier Street, Essendon, a northwestern suburb of the Melbourne metropolitan area.

Windy Hill is most notable as the former home base of the Essendon Football Club in the Australian Football League; the club used the ground for home matches from 1922 until 1991, and then as its primary administrative and training base until 2013. It is the current home ground of the Essendon Cricket Club in the Victorian Premier Cricket, the Essendon women’s team in the AFLW and the Essendon reserves in the Victorian Football League.

In the 1880s, the Essendon Recreation Reserve became the primary multi-purpose grassed sports reserve in Essendon. The Essendon Cricket Club was the ground manager and primary tenant, and played its cricket matches there during the summer. The Essendon Bowls Club was granted permissive occupancy of the south-western corner of the reserve in 1886. The reserve also contained a bicycle track, and was used by the Essendon District Football Club, which was a junior club, for its home games during the winter. At this stage, the Essendon Football Club, which was playing top-level senior football in the Victorian Football Association, played only occasional games at the venue; its primary home ground was the East Melbourne Cricket Ground approximately six miles away.

The demise of the Essendon District Football Club in 1897 left the ground vacant for other sports during the next three winters, including running and lacrosse. Football returned to the ground in 1900 with the establishment of the Essendon Town Football Club, which played in the Victorian Football Association. Over the following few years, the Essendon Croquet Club was established, and it built a court and club room in the north-eastern corner of the reserve.

In 1921, the East Melbourne Cricket Ground was closed, which forced the Essendon Football Club (at that time playing in the Victorian Football League) to find a new home. The council wanted the club to move to the Essendon Recreation Reserve, and committed to making £12,000 of improvements to the venue if the club did make the move, but the club thought it would have a better outcome if it moved to the Arden Street Oval in North Melbourne. Ultimately, Essendon's move to North Melbourne was blocked by the state government, after a protest from the VFA which did not want to lose access to the Arden Street Oval, so Essendon moved to the Essendon Recreation Reserve. The Essendon Town club disbanded as a result of losing its home ground.

After this move, Essendon used the venue as its home ground for VFL/AFL matches for the next seventy years, from 1922 until 1991. Essendon played 628 matches at the venue, with a win–loss record of 418–201-9, a winning percentage of 67.28%. The venue also hosted one neutral VFL match: a finals match between South Melbourne and Richmond during the 1924 VFL finals series. The record attendance was 43,487 for a match between Essendon and Collingwood in 1966.

The nickname "Windy Hill" for the ground was popularised in the mid-1950s by Lou Richards. Richards, a former Collingwood captain but by then a football columnist for The Sun News-Pictorial wrote his reviews in an expansive and humorous writing style and coined the term because of the ground's windy reputation. The nickname stuck and is in near-universal use to describe the ground – and often by association the Essendon Football Club itself.

In 1992, after a poll of members, the Essendon Football Club moved its home ground for matches from Windy Hill to the Melbourne Cricket Ground, but it retained Windy Hill as its training, administrative and social base. Over that time, the Essendon Cricket Club continued to use the venue for premier cricket matches in summer, and by the 2010/11 summer, Windy Hill was the last remaining venue still shared between an AFL club and a premier cricket club. Over time, some of the grandstands were demolished and some of the outer reclaimed.