Bessemer may refer to:
- Bessemer process, a method of making steel
- Henry Bessemer, the inventor of the Bessemer process
- SS Bessemer, a Victorian experimental paddle steamer
- Place names
In Canada:
- Bessemer, Ontario
In the United States:
- Bessemer, Alabama
- Bessemer Airport
- Bessemer Civic Center
- Bessemer, Colorado
- Bessemer, Michigan
- Bessemer Township, Michigan
- Bessemer City, North Carolina
- Bessemer, Pennsylvania (disambiguation), several places
- Bessemer Bend, Wyoming
- Fictitious town in Upstate New York in David Stout's novel The Night of the Ice Storm
- Other uses
- Bessemer Historical Society in Pueblo, Colorado
- Bessemer Trust, a wealth management and investment advisory firm
- Bessemer Venture Partners, a global venture capital and growth equity firm
- Bessemer and Lake Erie Railroad, a major carrier of iron ore to Pittsburgh, Pennsylvania
- Lindsay Goldberg & Bessemer, a private equity investment firm associated with Bessemer Securities
- Bessemer was one of the GWR 3031 Class locomotives that were built for and run on the Great Western Railway between 1891 and 1915, formerly named Rougemont before 1898.