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
150P/LONEOS 159P/LONEOS 182P/LONEOS 201P/LONEOS 267P/LONEOS 315P/LONEOS 359P/LONEOS 376P/LONEOS 450P/LONEOS 493P/LONEOS P/1999 RO28 (LONEOS)
Non-periodic comets
C/2000 S3 (LONEOS) C/2001 G1 (LONEOS) C/2001 OG108 (LONEOS) C/2002 R3 (LONEOS) C/2005 EL173 (LONEOS) C/2006 S3 (LONEOS) C/2007 F1 (LONEOS)
Others "Comet LONEOS" may also be an incomplete reference to comets co-discovered with the LONEOS program: 316P/LONEOS–Christensen 328P/LONEOS–Tucker 343P/NEAT–LONEOS 409P/LONEOS–Hill 462P/LONEOS–PANSTARRS