The Brunswick-Topsham Land Trust (abbreviated BTLT) is a volunteer-run conservation group based in Brunswick, Maine, United States.

Established in 1985 and funded by its members, it owns many preserves and trail networks, and has assisted in the creation of town-owned parks and preserves.

[2] The trust's executive director is Steve Walker,[3] while its president is Emily Swan.

[4] Since 1985, the trust has conserved over 3,100 acres (1,300 ha) of land.

[2] As of 2024, the trust owns the following 44 conservation lands:[5] Brunswick: Topsham: Bowdoin: