Petley Reef (Filipino: Bahura ng Juan Luna); Núi Thị Reef (Vietnamese: Đá Núi Thị); Mandarin Chinese: 舶兰礁; pinyin: Bólán jiāo, is a reef on the northern part of the Tizard Bank of the Spratly Islands in the South China Sea.

It is also claimed by China (PRC), the Philippines, and Taiwan.

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