Erma may refer to:
- People
- Erma Bergmann (born 1924), All-American Girls Professional Baseball League pitcher and outfielder
- Erma Bombeck (1927–1996), American humorist and newspaper columnist
- Erma Franklin (1938–2002), American soul, rhythm and blues, and pop singer
- Erma Perham Proetz (1891-1944), American advertising executive and first woman inducted into the Advertising Hall of Fame
- Geography
- Erma Knoll, a peak in upper Huron Glacier, Livingston Island, Antarctica
- Erma, New Jersey, a census-designated place and unincorporated area
- Erma Reka (village), a village in southern Bulgaria
- Jerma or Erma River, in southeastern Serbia and western Bulgaria
- Acronym
- Electronic Recording Machine, Accounting
- Environmental Risk Management Authority, a former New Zealand government body
- Erma Werke, a now defunct German weapon manufacturer
- Extremely Reusable Monitoring API, an instrumentation application programming interface that has been designed to be applicable for all monitoring needs
- Other uses
- Erma's House, a child visitation center in Dayton, Ohio, run by Catholic Social Services
- Erma Felna, a character in Erma Felna: EDF, a furry comic book story series created by Steve Gallacci