Lewis Mill Complex

{{Use mdy dates|date=February 2025}}

{{Infobox NRHP

| name = Lewis Mill Complex

| nrhp_type =

| image = Lewis Mill MD1.jpg

| caption =

| nearest_city = Jefferson, Maryland

| coordinates = {{coord|39|22|20|N|77|33|34|W|display=inline,title}}

| locmapin = Maryland#USA

| built = {{Start date|1810}}

| added = May 6, 1982

| area = {{convert|2.4|acre}}

| refnum = 82002813{{NRISref|version=2010a}}

}}

Lewis Mill Complex is a historic grist mill complex located at Jefferson, Frederick County, Maryland. The complex consists of seven standing structures, a house foundation, and the remains of an earlier millrace. It centers on an early 19th-century three-story brick mill structure with a gabled roof. The mill complex served German immigrant farmers in Middletown Valley between 1810 and the 1920s. It was rehabilitated in 1979-1980 for use as a pottery shop. Also in the complex are a stuccoed log house and log springhouse built about; a frame wagon shed and corn crib structure and frame barn dating from the late 19th century; and early 20th century cattle shelter and a frame garage.{{cite web|url=https://mht.maryland.gov/secure/medusa/PDF/NR_PDFs/NR-679.pdf |title=National Register of Historic Places Registration: Lewis Mill Complex |date=April 1981|accessdate=2016-01-01 |author=Cherilyn E. Widell|publisher=Maryland Historical Trust}}

It was listed on the National Register of Historic Places in 1982.

A trombe wall was installed on the south wall of the mill in 1980 to heat the business and living quarters. Solar panels were installed on outbuildings in 2011.