NGC 3783 is a barred spiral galaxy located about 135 million light years away in the constellation Centaurus. Its velocity with respect to the cosmic microwave background is 3234 ± 22 km/s, which corresponds to a Hubble distance of 155.6 ± 10.9 Mly (47.70 ± 3.35 Mpc). In addition, two non-redshift measurements give a distance of 155.74 ± 30.17 Mly (47.750 ± 9.250 Mpc). It was discovered by British astronomer John Herschel on 21 April 1835.