This is a list of the National Register of Historic Places listings in Washington County, Ohio.

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Washington County, Ohio, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a Google map.^[1]

There are 37 properties and districts listed on the National Register in the county, including 1 National Historic Landmark.

          This National Park Service list is complete through NPS recent listings posted March 1, 2024.^[2]

Current listings

[3]	Name on the Register[4]	Image	Date listed[5]	Location	City or town	Description
1	Charles Rice Ames House	More images	February 14, 1978 (#78002208)	2212 Miller Ave. 39°16′59″N 81°36′21″W / 39.283056°N 81.605833°W / 39.283056; -81.605833 (Charles Rice Ames House)	Belpre
2	Col. Joseph Barker House		June 23, 1978 (#78002210)	North of Marietta on Masonic Park Rd. 39°29′11″N 81°29′19″W / 39.486389°N 81.488611°W / 39.486389; -81.488611 (Col. Joseph Barker House)	Muskingum Township
3	Judge Joseph Barker Jr. House	More images	July 26, 1979 (#79001979)	Southwest of Newport on State Route 7 39°21′29″N 81°19′45″W / 39.358056°N 81.329167°W / 39.358056; -81.329167 (Judge Joseph Barker Jr. House)	Newport Township
4	Becker Lumber and Manufacturing Company		June 18, 1987 (#87000988)	121 Pike St. 39°24′55″N 81°26′28″W / 39.415383°N 81.441211°W / 39.415383; -81.441211 (Becker Lumber and Manufacturing Company)	Marietta
5	Bell Covered Bridge	More images	October 3, 2012 (#12000836)	Bell Rd., north of Vincent 39°25′52″N 81°40′34″W / 39.431111°N 81.676111°W / 39.431111; -81.676111 (Bell Covered Bridge)	Barlow Township
6	Cisler Terrace		January 19, 1983 (#83002065)	7th and Ephraim Cutler Sts. 39°25′18″N 81°26′58″W / 39.421658°N 81.449439°W / 39.421658; -81.449439 (Cisler Terrace)	Marietta
7	Coal Run Historic District	More images	February 22, 1996 (#96000115)	Roughly along Main, Maple, and Hill Sts. in Coal Run 39°34′01″N 81°35′15″W / 39.566944°N 81.5875°W / 39.566944; -81.5875 (Coal Run Historic District)	Waterford Township
8	Walter Curtis House	More images	October 3, 1980 (#80003244)	South of Little Hocking 39°13′17″N 81°42′39″W / 39.221389°N 81.710833°W / 39.221389; -81.710833 (Walter Curtis House)	Belpre Township
9	Col. Simeon Deming House		March 24, 1980 (#80003245)	Northeast of Watertown on Willis Rd. 39°29′21″N 81°36′35″W / 39.489167°N 81.609722°W / 39.489167; -81.609722 (Col. Simeon Deming House)	Watertown Township
10	Erwin Hall, Marietta College	More images	April 23, 1973 (#73001547)	5th St. on Marietta College campus 39°25′01″N 81°27′02″W / 39.416944°N 81.450556°W / 39.416944; -81.450556 (Erwin Hall, Marietta College)	Marietta
11	First Unitarian Church Of Marietta	More images	October 3, 1973 (#73001548)	232 3rd St. 39°24′58″N 81°27′11″W / 39.416111°N 81.453056°W / 39.416111; -81.453056 (First Unitarian Church Of Marietta)	Marietta
12	Harmar Historic District		December 19, 1974 (#74001645)	Roughly bounded by the Ohio and Muskingum Rivers and the rear property line of Lancaster, George, and Franklin Sts.; also roughly bounded by Lancaster, Harmar, Putnam, and Franklin Sts. and the Ohio River, Fort Harmar Dr., and the Muskingum River 39°24′35″N 81°27′46″W / 39.409722°N 81.462778°W / 39.409722; -81.462778 (Harmar Historic District)	Marietta	Second set of boundaries represents a boundary increase of 1993
13	Harra Covered Bridge	More images	October 8, 1976 (#76001547)	2 mi (3.2 km) northwest of Watertown on State Route 172 39°29′16″N 81°38′53″W / 39.487778°N 81.648056°W / 39.487778; -81.648056 (Harra Covered Bridge)	Watertown Township
14	Hildreth Covered Bridge	More images	February 8, 1978 (#78002211)	5 mi (8.0 km) east of Marietta off State Route 26 39°25′38″N 81°21′42″W / 39.427222°N 81.361667°W / 39.427222; -81.361667 (Hildreth Covered Bridge)	Newport Township
15	Hune Covered Bridge	More images	October 8, 1976 (#76001545)	2.5 mi (4.0 km) north of Dart on State Route 26 39°30′38″N 81°15′02″W / 39.510556°N 81.250556°W / 39.510556; -81.250556 (Hune Covered Bridge)	Lawrence Township
16	William Hune Farm		March 28, 1991 (#91000303)	State Route 26 north of Dart 39°30′43″N 81°14′56″W / 39.512083°N 81.248889°W / 39.512083; -81.248889 (William Hune Farm)	Lawrence Township
17	John Kaiser House		December 10, 1993 (#93001392)	300 Bellevue St. 39°24′56″N 81°27′59″W / 39.415556°N 81.466389°W / 39.415556; -81.466389 (John Kaiser House)	Marietta
18	Marietta Historic District	More images	December 19, 1974 (#74001646)	Roughly bounded by the Muskingum and Ohio Rivers and Warren, 3rd, 5th, and 6th Sts.; also roughly bounded by Marion, Montgomery, Ohio, Greene, Butler, 2nd through 9th Sts., and the Ohio and Muskingum Rivers 39°25′04″N 81°27′19″W / 39.417778°N 81.455278°W / 39.417778; -81.455278 (Marietta Historic District)	Marietta	Second set of boundaries represents a boundary increase of 2001
19	Mason House		November 29, 1979 (#79001978)	Township Road 393 39°33′51″N 81°35′05″W / 39.564028°N 81.584722°W / 39.564028; -81.584722 (Mason House)	Waterford Township
20	Mound Cemetery Mound	More images	February 23, 1973 (#73001549)	5th and Scammel Sts. 39°25′13″N 81°27′06″W / 39.420267°N 81.45175°W / 39.420267; -81.45175 (Mound Cemetery Mound)	Marietta	Mound Cemetery, home to the Mound Cemetery Mound (aka Conus or Great Mound) and reportedly home to the largest number of American Revolutionary War officers buried in one location
21	Muskingum River Navigation Historic District		February 9, 2007 (#07000025)	Coshocton, Muskingum, Morgan, Washington Counties 39°28′14″N 81°29′28″W / 39.470556°N 81.491111°W / 39.470556; -81.491111 (Muskingum River Navigation Historic District)	Numerous jurisdictions
22	Ohio Company Land Office	More images	November 10, 1970 (#70000523)	Washington and 2nd Sts., Campus Martius Museum 39°25′16″N 81°27′42″W / 39.421111°N 81.461667°W / 39.421111; -81.461667 (Ohio Company Land Office)	Marietta
23	Old St. Mary's School		October 3, 1989 (#89001457)	132 S. 4th St. 39°24′52″N 81°26′49″W / 39.414444°N 81.446944°W / 39.414444; -81.446944 (Old St. Mary's School)	Marietta	Destroyed
24	Rufus Putnam House	More images	November 10, 1970 (#70000524)	Campus Martius Museum, corner of 2nd and Washington Sts. 39°25′17″N 81°27′41″W / 39.421389°N 81.461389°W / 39.421389; -81.461389 (Rufus Putnam House)	Marietta
25	Rinard Covered Bridge	More images	October 8, 1976 (#76001546)	Northeast of Wingett Run on County Road 406 39°32′12″N 81°13′23″W / 39.536667°N 81.223056°W / 39.536667; -81.223056 (Rinard Covered Bridge)	Ludlow Township
26	Root Covered Bridge	More images	March 27, 1975 (#75001552)	0.5 mi (0.80 km) north of Decaturville on County Route 6 39°20′33″N 81°45′16″W / 39.3425°N 81.754444°W / 39.3425; -81.754444 (Root Covered Bridge)	Decatur Township
27	Sawyer-Curtis House	More images	October 18, 1984 (#84002696)	Off U.S. Route 50 in Little Hocking 39°15′39″N 81°41′47″W / 39.260833°N 81.696389°W / 39.260833; -81.696389 (Sawyer-Curtis House)	Belpre Township
28	Shinn Covered Bridge	More images	October 8, 1976 (#76001544)	Northeast of Bartlett off State Route 555 39°27′46″N 81°45′40″W / 39.462778°N 81.761111°W / 39.462778; -81.761111 (Shinn Covered Bridge)	Palmer Township
29	Sixth Street Railroad Bridge	More images	December 10, 1982 (#82001785)	East of the 5th Street Bridge 39°16′15″N 81°33′54″W / 39.27079°N 81.56503°W / 39.27079; -81.56503 (Sixth Street Railroad Bridge)	Belpre	Extends into Wood County, West Virginia
30	Spencer's Landing		August 18, 1992 (#92001035)	4 E. 5th St. 39°16′37″N 81°33′59″W / 39.276919°N 81.566372°W / 39.276919; -81.566372 (Spencer's Landing)	Belpre
31	Jonathan Sprague House	More images	January 11, 1983 (#83002067)	West of Lowell off State Route 60 39°33′34″N 81°34′13″W / 39.559444°N 81.570278°W / 39.559444; -81.570278 (Jonathan Sprague House)	Adams Township
32	Capt. Jonathan Stone House		February 7, 1978 (#78002209)	612 Blennerhassett Ave. 39°16′15″N 81°34′37″W / 39.27096°N 81.57690°W / 39.27096; -81.57690 (Capt. Jonathan Stone House)	Belpre	Oldest building in Belpre. Associated with the Underground Railway.
33	Vaughn-Stacy-Evans Farm Historic District		September 6, 2006 (#06000764)	7700 State Route 60, southeast of Lowell 39°30′22″N 81°27′39″W / 39.506111°N 81.460833°W / 39.506111; -81.460833 (Vaughn-Stacy-Evans Farm Historic District)	Muskingum Township
34	W. P. Snyder Jr. (towboat)	More images	November 10, 1970 (#70000522)	On the Muskingum River at Sacra Via 39°25′13″N 81°27′48″W / 39.420278°N 81.463333°W / 39.420278; -81.463333 (W. P. Snyder Jr. (towboat))	Marietta
35	Waernicke-Hille House and Store		November 29, 1979 (#79001977)	Township Road 36 in Archers Fork 39°29′03″N 81°12′19″W / 39.484167°N 81.205278°W / 39.484167; -81.205278 (Waernicke-Hille House and Store)	Independence Township
36	Watertown Historic District		April 10, 1986 (#86000728)	East of State Route 339 and north of State Route 676 39°27′59″N 81°37′57″W / 39.466389°N 81.6325°W / 39.466389; -81.6325 (Watertown Historic District)	Watertown Township
37	Wilcox-Mills House		April 13, 1973 (#73001550)	301 5th St. 39°25′04″N 81°27′05″W / 39.417778°N 81.451389°W / 39.417778; -81.451389 (Wilcox-Mills House)	Marietta