The following is a list of Michigan State Historic Sites in Alger County, Michigan. Sites marked with a dagger (†) are also listed on the National Register of Historic Places in Alger County, Michigan.[1]
{{-}}| Name | Image | Location | City | Listing date | | Alger County Courthouse (Demolished) | Elm Street | Munising | 1976|12|14}} |
| American Fur Company Log Cabin No. 3 | Elm and Varnum Streets | Munising | 1981|02|23}} |
| Au Sable Light Station† | 7|mi}} west of Grand Marais | Burt Township | 1976|09|21}} |
| Bay Furnace† | Northwest of Christmas off M-28 in Hiawatha National Forest (Sec 29, T47N, R19W) | Christmas | 1971|01|22}} |
| Bird-Olivier House | Everett Avenue and Emma Street | Grand Marais | 1981|04|24}} |
| Burt and Gamble Railway Grade | 2.5|mi}} east of Grand Marais | Grand Marais | 1976|11|03}} |
| Curtis and Miller Cook Sawmill | East Everett Road (H-58) | Grand Marais | 1989|02|16}} |
| First National Bank and Post Office | 100 West Munising Avenue | Munising | 1980|02|27}} |
| Grand Island | Munising Bay, Lake Superior | Munising | 1959|02|12}} |
| Grand Marais Informational Designation | Bay Shore Park, Au Sable Point | Grand Marais | 1962|08|14}} |
| Grand Marais Post Office Building | Grand Marais Avenue at Randolph Street | Grand Marais | 1978|01|19}} |
| Hill's Store (Demolished) | Grand Marais Avenue | Grand Marais | 1971|01|06}} |
| Lake Superior Informational Designation | 11|mi}} west of Munising | Au Train Township | 1957|01|19}} |
| Lobb House† | 203 West Onota Street | Munising | 1973|12|11}} |
| Mikulich General Store† | Corner of county roads H-01 and H-44 | Traunik | 1987|10|23}} |
| Pacific Hotel | 100 Rock River Road (M-94) | Chatham | 1985|06|20}} |
| Paulson House† | South of Au Train on USFS Road 2278 in Hiawatha National Forest (Sec. 6, T46N, R20W) | Au Train Township | 1972|02|11}} |
| Pictured Rocks | 2|mi}} east of Munising | Munising | 1965|02|17}} |
| Tyoga Historical Pathway Informational Designation | Just north of the Village of Deerton | Deerton | 1987|06|10}} |
1. ^{{NRISref|version=2009a}}
{{Michigan State Historic Sites}}