山陽姓，為琉球族獨有的漢式複姓，琉球國規定外島士族須使用複姓，部份複姓為琉球人自創，山陽姓是其中之一，為八重山系士族姓氏之一。元祖為宮良親雲上長光，其子孫皆屬於八重山山陽氏，名乘頭為「長」[1]。
名人
參考文獻
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