| Petrof Bay | |
|---|---|
)  Petrof Bay | |
| Location | Alaska |
| Coordinates | 56°24′10″N 134°03′48″W / 56.40278°N 134.06333°W |
| Type | Bay |
Petrof Bay is a small bay on the west side of Kuiu Island in the Alexander Archipelago in southeastern Alaska, United States. It is located at 56°N 134°W / 56°N 134°W and opens into the Chatham Strait.
The bay was named in 1924 for U.S. Census Bureau employee Ivan Petrof, whose reports of his travels in the late 19th century are a valuable source of Alaska history for that period.