The Philadelphia Giants were declared the champions even though they joined the league later as a replacement team. They inherited a 3-0 record from the Quaker Giants and finished their schedule going 4-1, for an official record of 7-1.
TEAMWLPctGB
1906 Philadelphia Giants LogoPhi. Giants    71.875-
1906 Boston Royal Giants LogoBoston  .000-
1906 Cuban X-Giants LogoX-Giants 62.7501.0
1906 Wilmington Giants LogoWilmington  44.5003.0
1906 Cuban Stars (West) LogoCuban West  .000-
1906 Philadelphia Professionals LogoPhi. Pros 35.3754.0
1906 Riverton–Palmyra Athletic Club LogoRiverton AC  08.0007.0
1906 Havana Stars LogoHavana  .000-