Cássio is a Brazilian masculine given name, and Cassio is an Italian surname.

Cássio or Cassio may refer to:

• Cássio Alessandro de Souza (born 1986), Brazilian footballer
• Cássio Alves de Barros (born 1970), Brazilian footballer
• Cássio (footballer, born January 1980), Cássio José de Abreu Oliveira, Brazilian football left-back
• Cássio (footballer, born August 1980), Cássio Albuquerque dos Anjos, Brazilian football goalkeeper
• Cássio (footballer, born 1999), Cássio Luiz da Silva Júnior, Brazilian football midfielder
• Cássio Motta (born 1960), Brazilian tennis player
• Cássio (footballer, born 1987), Cássio Ramos, Brazilian football goalkeeper
• Cássio Vargas (born 1983), Brazilian footballer
• Cassio Werneck, Brazilian jiu-jitsu competitor and instructor

• Nicola Cassio (born 1985), Italian swimmer

• Michael Cassio, a character in William Shakespeare's tragedy Othello
• General Tagge or Cassio Tagge, character in the Star Wars universe

• Cassiobury, a suburb of Watford, Hertfordshire
• Cassio (or Cashio), an archaic name for the estate of Cassiobury House, a former stately home in Watford
• Cassiobury Park, a public park in Watford
• Cassiobridge tube station, a planned London Underground station in Watford

• Casio, a multinational electronic devices manufacturing company
• Casso, an Italian village in the municipality of Erto e Casso
• Cassia (disambiguation)
• Cassie (disambiguation)
• Anthony Casso, an American mobster
• Kassio (disambiguation)

This disambiguation page lists articles associated with the title Cássio.
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