The Islamic Union of Hong Kong (traditional Chinese: 香港伊斯蘭聯會; simplified Chinese: 香港伊斯兰联会; pinyin: Xiānggǎng Yīsīlán Lián Huì) is an Islamic charitable and non-profit organisation in Hong Kong, China.

The headquarters of the union is at the Ammar Mosque and Osman Ramju Sadick Islamic Centre.

[2] In 1980, the constitution of the organisation was revised to fulfill the requirements for incorporation as a legal entity under The Companies Ordinance of the British Hong Kong government.

[3] The organisation regularly holds various types of classes, such as sewing, dawah, embroidery, handicraft, computer, English language, martial arts, Quran, Adhan etc.

[4] The organisation also runs a medical clinic, which includes a pharmacy served by volunteer Muslim doctors and nurses.