Comet LONEOS may refer to any of the 18 comets discovered by the Lowell Observatory Near-Earth-Object Search (LONEOS) program between 1993 and 2008.

Periodic comets

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450P/LONEOS

Non-periodic comets

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C/2007 F1 (LONEOS)

Others

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"Comet LONEOS" may also be an incomplete reference to comets co-discovered with the LONEOS program: