Surnames
- Brian Cass
- David Cass (1937–2008), American economist
- Elizabeth Cass
- Frederick Cass
- George Washington Cass
- Godfrey Cass
- Harriet Cass
- John Cass (1661–1718), English politician and philanthropist
- Lewis Cass, American Democratic presidential nominee in 1848, Secretary of State, Secretary of War, Michigan Governor
- Loren Cass
- Lou Cass
- Moss Cass
- Peggy Cass
- Thomas Cass, Colonel of the 9th Regiment Massachusetts Volunteer Infantry
- Wilfred Cass
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