光星礁

光星礁（馬來語：Terumbu Laya，越南语：Đá Suối Cát／.mw-parser-output .han-nom{font-family:"Gothic Nguyen","Han-Nom Gothic","Minh Nguyen","Han-Nom Minh","Nom Na Tong","HAN NOM A","HAN NOM B","TH-Khaai-TP0","TH-Khaai-TP2","TH-Khaai-PP0","TH-Khaai-PP2","TH-Sung-PP0","TH-Sung-PP2","TH-Sung-TP0","TH-Sung-TP2","TH-Sy-P0","TH-Sy-P2","TH-Ming-JP0","TH-Ming-JP2","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}𥒥𤂬𣻅，外国文献称为 Dallas Reef，马来西亚作拉亚礁，中国渔民俗称大光星），为南中国海南沙群岛中的一个环礁，位于南海礁以南，光星仔礁以西，拉央拉央岛以北。环礁呈不规则形状，低潮时出露，无礁门。