Keo or KEO may refer to:

• Keo, another name for the Thổ people

• The KEO satellite

• Communist Unification Group (Greek: Κομμουνιστική Ενωτική Ομάδα) or KEO, a defunct political party

• KEO (beer), a brand of beer brewed in Cyprus

• KEO (company), the largest beverage company in Cyprus

• Keo, Estonia, a village in Estonia

• Keo, Arkansas, a town in the United States

• K. E. O. abbreviation for "King Edward's Own", as in several Indian regiments:

• 2nd King Edward VII's Own Gurkha Rifles (The Sirmoor Rifles)

• 6th King Edward's Own Cavalry

• 11th King Edward's Own Lancers (Probyn's Horse)

• 18th King Edward's Own Cavalry

Surname

Keo is a Khmer surname () and a surname in other cultures. People with this surname include:

• Keo Meas (1926–1976), Cambodian communist politician

• Keo Puth Rasmey (born 1952), Cambodian politician, Funcinpec party leader

• Keo Remy (born 1963), Cambodian cabinet member

• Keo Pich Pisey (born 1982), Cambodian actress

• Shiloh Keo (born 1987), American football safety

• Elvinn Keo (born 1988), Malaysian squash player

• Keo Sokpheng (born 1992), Cambodian football forward

• Keo Soksela (born 1997), Cambodian football goalkeeper

• Keo Saphal (Siem Reap politician), Cambodian politician

• Keo Saphal (Takeo politician), Cambodian politician

Given name

• Keo Nakama (1920–2011), American swimmer

• Keo Woolford (1967–2016), American actor, producer, and director

• Keo Coleman (born 1970), American football linebacker

• Keo Motsepe (born 1989), South African dancer

• Keo Nozari (), American singer-songwriter