The Diocese of Naha^[1] (Latin: Dioecesis Nahana, Japanese: カトリック那覇教区) is a Latin Church diocese of the Catholic Church in the ecclesiastical province of the Metropolitan Nagasaki 長崎, in southern Japan.

Its cathedral episcopal see is the Cathedral of the Immaculate Heart of Mary (Kainan Church), located in the city of Naha (on and administrative capital of Okinawa).

• Established in 1947 as Apostolic Administration of Okinawa and the Southern Islands alias of (the) Ryukyus, an exempt missionary pre-diocesan jurisdiction, on territory split off from the then Apostolic Prefecture of Kagoshima 鹿児島 (now a diocese in the same province).
• Promoted on December 18, 1972 as Diocese of Naha, after its see.

All Roman Rite, members of a Latin congregation

Apostolic Administrators of Okinawa and the Southern Islands

• Apollinaris William Baumgartner (アポリナリス・バウムガートナー), OFMCap (1947 – 1949), titular bishop of Joppe (Jaffa) (1945.08.25 – 1965.10.14) and apostolic vicar of Guam (1945.08.25 – 1965.10.14), later Bishop of Agaña (Guam) (1965.10.14 – 1970.12.18)
• Felix Ley, OFMCap (1949 – 23 January 1972), titular bishop of Caput Cilla (12 March 1968 – 23 January 1972)

Suffragan Bishops of Naha

• Peter Baptist Tadamaro Ishigami, (ペトロ・バプティスタ石神忠真郎), OFMCap (18 December 1972 – 24 January 1997 retired)
• Berard Toshio Oshikawa, (ベラルド押川壽夫), OFMConv (24 January 1997 – 9 December 2017 retired)
• Wayne Francis Berndt, OFMCap (9 December 2017 - )

• Roman Catholicism in Japan