Mill Creek (formerly known as Felt's Brook) is a watercourse in Falmouth Foreside, Maine, United States.

[1] It is crossed, near its mouth at inner Casco Bay, by State Route 88 — known as Foreside Road (formerly Atlantic Highway) in that section.

A plaster mill formerly stood directly south of this crossing, at the end of today's Old Mill Road, for 140 years.

[2][3] The brook was originally named for English immigrant George Felt, who was a large landowner in the area in the 17th century.

[4][5] Mill Creek Preserve is nearby.