Comet McNaught can refer to any one of more than 50 comets discovered by the astronomer Robert H. McNaught.
Long-period and single-apparition comets C/1987 U3 C/2005 E2 C/2005 L2 C/2005 L3 C/2005 S4 C/2006 B1 C/2006 E1 C/2006 K1 C/2006 K3 C/2006 L2 C/2006 P1, also known as the Great Comet of 2007. C/2006 Q1 C/2007 K6 C/2007 M1 C/2007 P1 C/2007 T1 C/2007 Y2 C/2008 A1 C/2008 J4 C/2009 F2 C/2009 F4 C/2009 F5 C/2009 K5 C/2009 R1 C/2009 T1 C/2010 J2 C/2011 C1 C/2011 G1 C/2011 L2 C/2011 L3 C/2011 N2 C/2011 Q2 C/2011 R1 C/2012 C1 C/2012 H2 C/2012 K6 C/2012 T4 C/2012 Y3 C/2013 E1 C/2013 F3 C/2013 G2 C/2013 G7 C/2013 J3 C/2013 O3
Short-period comets 191P/McNaught 220P/McNaught (outburst from magnitude 18 to magnitude 8 in June 2026) 254P/McNaught (P/2010 T1) 260P/McNaught (P/2005 K3) 278P/McNaught (P/2006 K2) 284P/McNaught (P/2007 H1) 320P/McNaught (P/2004 R1) 336P/McNaught (P/2006 G1) 338P/McNaught (P/2008 J3) 350P/McNaught (P/2010 J5) 353P/McNaught (P/2009 S2) 372P/McNaught (P/2008 O2) 378P/McNaught (P/2005 Y2) 401P/McNaught (P/2006 H1) 421P/McNaught (P/2009 U4) 442P/McNaught 446P/McNaught (P/2022 G2) P/2005 J1 P/2005 L1 P/2008 Y3 P/2009 Q5 C/2011 L1 P/2011 P1 P/2012 O1 P/2012 O2 P/2013 J2
Others "Comet McNaught" may also be an incomplete reference to a comet co-discovered by Robert McNaught. These include: Comet 319P/Catalina-McNaught (P/Catalina-McNaught 2008 S1, 2008 JK) Comet McNaught-Hartley, any of: 318P/McNaught-Hartley (P/1994 N2, P/2014 M6, 1994 XXXI, 1994n) X/1987 A2 (P/2013 Y3), later rediscovered as 449P/Leonard (P/2020 S6) C/1999 T1 Comet McNaught-Hughes, either of: C/1990 M1 (1991 III, 1990g) 130P/McNaught-Hughes (130P/1991 S1, 1991 IX, 1991y, 130P/1997 H1) Comet McNaught-Russell, any of: C/1991 C3 (1990 XIX, 1991g) C/1991 Q1 (1992 XI, 1991v) C/1991 R1 (1990 XXII, 1991w) C/1993 Y1 (1994 XI, 1993v) P/1994 X1 (1994 XXIV, 1994u) Comet McNaught-Tritton (C/1978 G2, 1978 XXVII) Comet McNaught-Watson (C/1999 S2)