光星礁

光星礁（英語：Dallas Reef、マレー語：Terumbu Laya、タガログ語：Rajah Matanda、ベトナム語：Đá Suối Cát / .mw-parser-output .vi-nom{font-family:"Nom Na Tong","Han-Nom Gothic","Han-Nom Ming","HAN NOM A","HAN NOM B","TH-Khaai-TP0","TH-Khaai-TP2","TH-Khaai-PP0","TH-Khaai-PP2","TH-Sung-PP0","TH-Ming-JP0","TH-Ming-JP2","TH-Sung-PP2","TH-Sung-TP0","TH-Sung-TP2","TH-Sy-P0","TH-Sy-P2","Ming-Lt-HKSCS-UNI-H","Ming-Lt-HKSCS-ExtB","FZKaiT-Extended","FZKaiT-Extended(SIP)","FZKaiS-Extended","FZKaiS-Extended(SIP)","Sun-ExtA","Sun-ExtB","MingLiU","MingLiU-ExtB","MingLiU_HKSCS","MingLiU_HKSCS-ExtB","SimSun","SimSun-ExtB",sans-serif}.mw-parser-output .vi-nom .ext{font-family:"Han-Nom Gothic","Han-Nom Ming","Han-Nom Minh","TH-Khaai-TP2","TH-Khaai-PP2","TH-Ming-JP2","TH-Sung-PP2","TH-Sung-TP2","TH-Sy-P0","TH-Sy-P2","Sun-ExtB","MingLiU HKSCS-ExtB","Ming-Lt-HKSCS-ExtB","HanaMinB","Han-Nom Kai",sans-serif}𥒥𤂬𣻅）は、南沙諸島にある環礁である。海口礁から南東約36海里離れている。不規則な形をしているが、環礁は不完全で礁門がない。