Fetter's Mill, also known as Louis Ewald Studio—Residence, is a historic grist mill located on Pennypack Creek at Bryn Athyn in Lower Moreland Township, Montgomery County, Pennsylvania.

It was built in the 1740s, and is a five level, stucco over stone building of post and beam construction.

It was enlarged about 1860, and in 1920 was converted to a residence and studio for decorative artist Louis Ewald.

[2] The parcel of land Fetter's Mill is on was once owned by William Penn until it was sold to Nicholas More on January 5, 1681/1682 when it became known as the "Manor of Moreland".

Artist Louis Ewald began renting the mill in 1920 to use as a studio and home, occupying it for 55 years.