Collins Reef (also known as Johnson North Reef/Johnson Reef North, Vietnamese: đá Cô Lin, Chinese: 鬼喊礁; pinyin: Guǐhǎn jiāo, Tagalog: Roxas) is a Vietnamese controlled reef in Union Banks of the Spratly islands in the South China Sea.
Collins Reef lies at 9°46′22″N 114°15′22″E / 9.772738°N 114.256230°ECoordinates: 9°46′22″N 114°15′22″E / 9.772738°N 114.256230°E (9°46′22″N 114°15′22″E / 9.772738°N 114.256230°E), to the northwest of Johnson South Reef, at the southwestern corner of the Union Banks.