Dartmouth Commons, Municipal park in Dartmouth, Canada

Dartmouth Commons covers about 120 hectares set aside in the late 18th century, much of it maintained by the Halifax Regional Municipality. Its best-known section is Leighton Dillman Park, named after a voluntary keeper of the garden. The grounds also hold baseball fields named for Arthur H. Merrick, a co-founder of minor baseball in Dartmouth in 1950, two burial grounds, schools and the Zatzman Sportsplex.

Officials designated this land in the late 1700s for settlers' shared use, creating a permanent green space for the growing community. This action secured an important public area during Dartmouth's early expansion.

The Leighton Dillman Park section within the grounds honors a dedicated volunteer who maintained the gardens and shaped the landscape. His legacy remains visible in the well-kept green spaces that define the site today.

The Bridge Transit Terminal, a major Halifax Transit hub, sits between the Zatzman Sportsplex and Dartmouth High School, giving direct bus access to the commons. Paths and ball fields lie within walking distance of the terminal, and the grounds are held in trust for public use.

Section 529 of the Halifax Regional Municipality Act bars the municipality from selling, leasing or building on the common, which it holds in trust for residents. A 1998 amendment allows one exception: transit facilities fronting on Nantucket Avenue and parking lots for the Sportsplex, capped at 24,000 square metres.