Agga may refer to:

• Agga, a character in Timewyrm: Genesys, a Doctor Who novel
• Agga, variant spelling of Aga of Kish, a king of Kish
• Agga Olsen, European actress whose best known work is Smilla's Sense of Snow, a 1997 film

Agga means 'chief' or 'foremost' in Burmese, and may refer to:

• Agga Maha Thiri Thudhamma (Grand Commander) of the Thiri Thudhamma Thingaha (Order of Truth)
• Agga Maha Thray Sithu (Grand Commander) of the Pyidaungsu Sithu Thingaha (Order of the Union of Burma)
• Agga Maha Thray Sithu Agga Maha Thiri Thudhamma, also known as Sao Shwe Thaik, first president of the Union of Burma

Agga may also refer to:

• Aunt Agga, an agony aunt persona used by Lillian Too, a feng shui expert
• Spaceship Agga Ruter, a 1998 hentai film series directed by Masaki Kajishima

AgGa is silver gallium, an ion that forms many compounds, some of which are used in lasers.

AGGA may refer to:

• Agalinis gattingeri, the roundstem false foxglove plant (USDA code: AGGA)
• AGGA, a common DNA sequence
• Aggregate access, an Internet protocol formally known as Aggregate Server Access Protocol
• Auki Airport, in the Solomon Islands (IACO code: AGGA)

See also:

• Aga
• Agadoo doo doo, a nonsense lyric from 1984 novelty song Agadoo
• Agar, a gelatinous substance used in confectionery and microbiology
• AGG
• AGGAGG, the Shine-Dalgarno sequence of DNA base pairs. AGGAGGA is the Escherichia coli Shine-Dalgarno sequence
• Aggar, a 2007 Bollywood film
• Agge
• Agger, a Roman embankment
• Agha