The Bayer designation Omicron Cygni (ο Cyg / ο Cygni) is shared by two or three star systems in the constellation Cygnus. Application of the superscripts to the three stars varies in different publications; the Flamsteed designations are unambiguous:

• ο¹ Cygni: 31 Cygni, sometimes 30 Cygni
• ο² Cygni: 32 Cygni, sometimes 31 Cygni
• ο³ Cygni: sometimes 32 Cygni

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