Comet Swift or Swift's Comet, may refer to any of the 9 comets discovered by American astronomer, Lewis A. Swift, below:
C/1877 G2 (Swift) C/1878 N1 (Swift) C/1879 M1 (Swift) C/1881 J1 (Swift) C/1881 W1 (Swift) C/1892 E1 (Swift) D/1895 Q1 (Swift) C/1896 G1 (Swift) C/1899 E1 (Swift)
It may also be an incomplete reference to a comet he have co-discovered with other astronomers. These include:
11P/Tempel–Swift–LINEAR 64P/Swift–Gehrels 109P/Swift–Tuttle C/1883 D1 (Brooks–Swift)
In addition, his son, Edward D. Swift, discovered one comet below: 54P/de Vico–Swift–NEAT