Kamen Rider Black RX (仮面ライダーBLACK RX, Kamen Raidā Burakku Āru Ekkusu, Masked Rider Black RX) is a Japanese tokusatsu drama and the ninth installment of the Kamen Rider Series. Debuting as the 9th and final entry of the Showa Era, it serves as a direct sequel to Kamen Rider Black and aired from October 23, 1988 to September 24, 1989 on the Mainichi Broadcasting System and the Tokyo Broadcasting System. The 47-episode series was a joint collaboration between Ishimori Productions and Toei Company. The show aired in Indonesia under the title Ksatria Baja Hitam RX. The show aired in Hong Kong under the title 幪面超人RX.