'''RN is the code for:

• The state of Rio Grande do Norte, Brazil (BR code)
• The IATA code for Air Horizons
• Route Nationale (France), trunk road.

RN may stand for:

• Registered Nurse
• Royal Navy
• The Australian Broadcasting Corporation's Radio National
• Radio Nederland
• Richard Nixon, 37th President of the United States
• Registered Identification Number issued by the FTC

Rn may stand for:

• • Symbol for the chemical element Radon, Atomic number 86

rn may stand for:

• A Unix program to read news (Usenet newsgroups).
• reference noise

Rn | RN | RN