| St. Mark's Church | |
| Location: | Jct. of West Main and Elm Sts., Port Leyden, New York |
| Coordinates: | 43.5811°N -75.3497°W |
| Built: | 1865 |
| Architecture: | Gothic Revival |
| Added: | August 6, 1998 |
| Area: | less than one acre |
| Refnum: | 98001003 |
St. Mark's Church is a historic Episcopal church located at Port Leyden in Lewis County, New York. It is a frame board and batten sided, three by five bay structure built in 1865 in the Gothic Revival style.[1]
It was listed on the National Register of Historic Places in 1998.