Na can refer to:

• The name of Sodium in the periodic table.
• The name of a tribal people of Arunachal Pradesh. See Nga people.
• Na (surname), a Korean family name.
• Na (kana), the な or ナ kana in the Japanese language.

NA may refer to:

• Namibia (ISO country code)
• Narcotics Anonymous
• One of several National Alliances
• National Association — a banking term
• National Association of Professional Baseball Players
• Naturally-aspirated engine (Normally-aspirated engine)
• New Afrika — a North American Black nationalist group
• North America
• North American Airlines — IATA airline designator
• One of several Northern Alliances
• Not Applicable (usually written "n/a")
• Nucleic acid
• Numerical aperture — A specification in optical systems.
• Neo-Aramaic languages

nA may stand for:

• Nanoampere, an SI unit of electric current (defined as 10⁻⁹ A)

See also

• Na Na
• Na Na Na Na Naa
• Hey Jude

Na | Na | NA | NA | NA | NA | NA | NA | Na | Na