GCN

GCN may refer to:

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Media and society

Gay Christian Network, now called Q Christian Fellowship, a nonprofit organization and associated social networking site
Gay Community News (Dublin), Ireland's longest running gay newspaper, published since 1988 by the National Lesbian and Gay Federation
Gay City News, a free weekly LGBT newspaper stylized as gcn.
Gay Community News (Boston), a weekly journal published in Boston from 1973 to 1992
Genesis Communications Network, a defunct US radio network
Global Cycling Network, a YouTube channel

General Coordinates Network, formerly known as Gamma-ray burst coordinates network
Graphics Core Next, an AMD graphics microarchitecture series
Degenerate codon for the amino acid Alanine (A)