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

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Ottawa 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 an online map.^[1]

There are 31 properties and districts listed on the National Register in the county, including 2 National Historic Landmarks.

          This National Park Service list is complete through NPS recent listings posted March 15, 2024.^[2]

Current listings

[3]	Name on the Register[4]	Image	Date listed[5]	Location	City or town	Description
1	Charles Andres House	Upload image	November 6, 1995 (#95001196)	County Road 154 (Fox Rd.) on Middle Bass Island 41°41′08″N 82°48′39″W / 41.6856°N 82.8108°W / 41.6856; -82.8108 (Charles Andres House)	Put-in-Bay Township
2	Carroll Township Hall		March 9, 1990 (#90000385)	Toussaint E. Rd. and Behlman Rd., north of Oak Harbor 41°34′02″N 83°07′31″W / 41.5672°N 83.1253°W / 41.5672; -83.1253 (Carroll Township Hall)	Carroll Township
3	Catawba Island Wine Company		May 5, 1983 (#83002019)	3845 Wine Celler Rd., east of Port Clinton 41°31′55″N 82°51′31″W / 41.5319°N 82.8586°W / 41.5319; -82.8586 (Catawba Island Wine Company)	Catawba Island Township
4	Alexander Clemons House		September 17, 1987 (#87001628)	133 Clemons St. 41°32′33″N 82°43′24″W / 41.5425°N 82.7233°W / 41.5425; -82.7233 (Alexander Clemons House)	Marblehead
5	Jay Cooke House	More images	November 13, 1966 (#66000620)	Gibraltar Island, Put-in-Bay, Lake Erie 41°39′29″N 82°49′16″W / 41.6581°N 82.8211°W / 41.6581; -82.8211 (Jay Cooke House)	Put-in-Bay
6	East Point Manor	Upload image	June 15, 1990 (#87000804)	S. Shore Dr. on Middle Bass Island 41°41′40″N 82°47′13″W / 41.6944°N 82.7869°W / 41.6944; -82.7869 (East Point Manor)	Put-in-Bay Township
7	First Congregational Church		September 22, 2000 (#00001161)	802 Prairie St. 41°32′32″N 82°44′05″W / 41.5422°N 82.7347°W / 41.5422; -82.7347 (First Congregational Church)	Marblehead
8	Foster-Gram House		March 19, 1992 (#92000175)	Langrum Rd. on South Bass Island 41°38′43″N 82°49′13″W / 41.6453°N 82.8203°W / 41.6453; -82.8203 (Foster-Gram House)	Put-in-Bay Township
9	Genoa Town Hall		June 7, 1976 (#76001504)	Main and 6th Sts. 41°31′05″N 83°21′29″W / 41.5181°N 83.3581°W / 41.5181; -83.3581 (Genoa Town Hall)	Genoa
10	Gill-Luchsinger-Bahnsen House and Barn		July 16, 1992 (#92000888)	426 E. 4th St. 41°30′31″N 82°56′04″W / 41.5086°N 82.9344°W / 41.5086; -82.9344 (Gill-Luchsinger-Bahnsen House and Barn)	Port Clinton
11	Golden Eagle Wine Cellars	Upload image	April 24, 1986 (#86000868)	Fox and Lonz Rds. on Middle Bass Island 41°40′36″N 82°48′37″W / 41.6767°N 82.8103°W / 41.6767; -82.8103 (Golden Eagle Wine Cellars)	Put-in-Bay Township
12	Green Island Light		December 18, 1990 (#90001909)	Green Island in Lake Erie 41°38′44″N 82°51′57″W / 41.6456°N 82.8658°W / 41.6456; -82.8658 (Green Island Light)	Put-in-Bay Township	ARLHS USA 353
13	Inselruhe		December 12, 1976 (#76001506)	Northeast of Put-in-Bay at the junction of Bayview Ave. and Chapman Rd. on South Bass Island 41°39′26″N 82°48′36″W / 41.6571°N 82.8100°W / 41.6571; -82.8100 (Inselruhe)	Put-in-Bay
14	Island House		July 2, 2008 (#08000623)	102 Madison St. 41°30′48″N 82°56′28″W / 41.5133°N 82.9411°W / 41.5133; -82.9411 (Island House)	Port Clinton
15	Johnson Island Civil War Prison and Fort Site	More images	March 27, 1975 (#75001514)	Eastern shore area of Johnson's Island 41°29′42″N 82°43′53″W / 41.4951°N 82.7313°W / 41.4951; -82.7313 (Johnson Island Civil War Prison and Fort Site)	Danbury Township
16	Lakeside Historic District		March 29, 1983 (#83002020)	Roughly bounded by Lake Erie, railroad tracks, and Poplar and Oak Aves., in Lakeside 41°32′32″N 82°44′53″W / 41.5422°N 82.7481°W / 41.5422; -82.7481 (Lakeside Historic District)	Danbury Township	Encompasses the entire gated community of Lakeside.
17	Main Street Historic District		September 22, 1992 (#92001261)	Roughly bounded by 8th, Washington, 5th, and West Sts. 41°31′07″N 83°21′30″W / 41.5186°N 83.3583°W / 41.5186; -83.3583 (Main Street Historic District)	Genoa
18	Marblehead Lighthouse	More images	December 17, 1969 (#69000148)	State Route 163 41°32′11″N 82°42′42″W / 41.5364°N 82.7117°W / 41.5364; -82.7117 (Marblehead Lighthouse)	Marblehead
19	Middle Bass Club Historic District	Upload image	August 23, 1985 (#85001843)	Grape and Grove Aves. on Middle Bass Island 41°41′05″N 82°49′30″W / 41.6847°N 82.825°W / 41.6847; -82.825 (Middle Bass Club Historic District)	Put-in-Bay Township
20	Betsy Mo-John Cabin		May 6, 1976 (#76001505)	About 4 mi (6.4 km) east of Port Clinton off State Route 53 41°31′55″N 82°51′29″W / 41.5319°N 82.8581°W / 41.5319; -82.8581 (Betsy Mo-John Cabin)	Catawba Island Township
21	North Bass School		June 22, 2020 (#100005289)	515 Kenny Rd. (North Bass Island State Park) 41°42′59″N 82°48′55″W / 41.7164°N 82.8154°W / 41.7164; -82.8154 (North Bass School)	Isle St. George, Put-in-Bay Township
22	Ohio State Route 51 Bridge over the Portage River		March 17, 1994 (#94000239)	State Route 51 over the Portage River 41°28′37″N 83°17′44″W / 41.4769°N 83.2956°W / 41.4769; -83.2956 (Ohio State Route 51 Bridge over the Portage River)	Elmore and Harris Township
23	Old School Privy		July 31, 1975 (#75001515)	310 Main St. 41°30′54″N 83°21′34″W / 41.5149°N 83.3594°W / 41.5149; -83.3594 (Old School Privy)	Genoa
24	Ottawa County Courthouse		May 3, 1974 (#74001588)	W. 4th and Madison Sts. 41°30′35″N 82°56′25″W / 41.5097°N 82.9403°W / 41.5097; -82.9403 (Ottawa County Courthouse)	Port Clinton
25	Perry's Victory and International Peace Memorial	More images	October 15, 1966 (#66000118)	South Bass Island 41°39′15″N 82°48′41″W / 41.6542°N 82.8114°W / 41.6542; -82.8114 (Perry's Victory and International Peace Memorial)	Put-in-Bay
26	Port Clinton City Hall		February 10, 2000 (#00000096)	Adams St. 41°30′44″N 82°56′16″W / 41.5122°N 82.9378°W / 41.5122; -82.9378 (Port Clinton City Hall)	Port Clinton
27	St. Thomas Episcopal Church	More images	July 15, 1999 (#99000845)	214 E. 2nd St. 41°30′41″N 82°56′20″W / 41.5114°N 82.9389°W / 41.5114; -82.9389 (St. Thomas Episcopal Church)	Port Clinton
28	South Bass Island Light		April 5, 1990 (#90000473)	Langram Rd., on the southwestern point of South Bass Island 41°37′46″N 82°50′30″W / 41.6294°N 82.8417°W / 41.6294; -82.8417 (South Bass Island Light)	Put-in-Bay Township
29	Union Chapel	Upload image	March 8, 2021 (#100006196)	5258 East Porter St. 41°34′58″N 82°50′06″W / 41.5827°N 82.8351°W / 41.5827; -82.8351 (Union Chapel)	Catawba Island Township
30	War Of 1812 Battle Site		February 23, 1972 (#72001038)	East Bay Shore Rd., 1 mi (1.6 km) west of its junction with Township Road 142 41°30′51″N 82°44′43″W / 41.5142°N 82.7453°W / 41.5142; -82.7453 (War Of 1812 Battle Site)	Danbury Township
31	Benajah Wolcott House		March 14, 1991 (#91000251)	9999 E. Bay Shore Rd., southwest of Marblehead 41°30′52″N 82°44′54″W / 41.5144°N 82.7483°W / 41.5144; -82.7483 (Benajah Wolcott House)	Danbury Township