Kadhdhoo or Kaddhoo, Kahdhoo (according to the Admiralty Charts) (Dhivehi: ކައްދޫ އެއަރޕޯޓް) is one of the inhabited islands of Haddummati Atoll, administrative code Laamu.

The island is 256.05 km (159 mi; 138 nmi) south of the country's capital, Malé.

[1] It is located south of Maandhoo and 500 m (550 yd) northeast of Fonadhoo.

Kadhdhoo has a tropical rainforest climate (Köppen: Af) with heavy rainfall year-round.

Kadhdhoo has several other facilities, including a mosque, hotel, several restaurants, harbour, storage facilities and a gas station (whose owner has the house with the sole family that actually lives on this island).