Fort Armstrong Hotel is a historic building located in downtown Rock Island, Illinois, United States.

[2] The hotel was named for Fort Armstrong, a fortification that sat in the middle of the Mississippi River near the present location of the Rock Island Arsenal.

Rock Island was in need of a modern hotel downtown, and to that end over $450,000 was raised in local stock purchases in a week.

Jazz clubs along Second Avenue regularly featured African-American entertainers such Louis Armstrong and Ella Fitzgerald.

[5] It features deep corner setbacks above the second floor that keep the building from dominating the street and allow plenty of light into the rooms.