RO

Not to be confused with R0 (disambiguation) (R followed by zero) .

Ro or RO may refer to:

Games

• Ragnarok Online, a South Korean computer game
• Red Orchestra: Ostfront 41-45, an American computer game
• Regnum Online, an Argentinian computer game
• RO (game), an American puzzle video game

Language

• Ro (kana), a Japanese character
• Ro (language), an American artificial language
• Romanian language

People

• Randy Orton (born 1980), American professional wrestler
• Ro Laren, Bajoran character in the fictional Star Trek universe
• Rónán, a name and persons with it
• Ro (pharaoh) (fl. 32nd century BC), Egyptian pharaoh

Places

• Rø, Denmark
• Ro, Emilia–Romagna, Italy
• Rö Church, in Stockholm County, Sweden
• Ro, Greece
• Romania
• Rondônia, Brazil

Organizations

• Reach Out (non-profit), an Australian information website
• Red Orchestra (espionage), a series of Soviet spy rings
• Reserve Officers' Training Corps, an American armed forces training program
  • Junior Reserve Officers' Training Corps
• Royal Ordnance, a British armaments manufacturer
• Russian Orthodox, a church
• TAROM, a Romanian airline

Science and technology

• Autoantigen Ro, a protein
• Radio occultation, a technique for measuring the properties of an atmosphere
• Read-only access, a computer software attribute
• Read-only memory (ROM), a computer storage medium
• Receive only, a type of teleprinter
• Relaxation oscillator, an electronic oscillator
• Reverse osmosis, a filtration method
• Right only, a method of manipulating stereophonic sound
• Ro (volume), an Egyptian unit of measurement

Other uses

• .ro, the top level internet domain for Romania
• Radical Orthodoxy, an English Christian theology
• Renewables Obligation, a British order requiring renewable electricity generation
• Restraining order, a legal injunction
• Ro (title), a Fijian noble title

See also

• Rho (disambiguation)
• ROH (disambiguation)
• Roll-on/roll-off (RORO or ro-ro), ships designed to carry wheeled cargo