Wang Yanhan

Full name
	Family name: Wáng (王); Given name: Yánhàn (延翰);
Era name and dates
	Tiancheng (天成) (adopted the Later Tang's era name): 926
Posthumous name
	King Si (嗣王)

King Si of Min
閩嗣王
King Si of Min; 閩嗣王
King of Great Min (大閩國王)
Reign	November 13, 926 – January 14, 927
Predecessor	Wang Shenzhi
Successor	Wang Yanjun
Jiedushi of Weiwu Circuit; (威武軍節度使)
Tenure	November 13, 926 – January 14, 927; (Acting: December 30, 925 – November 13, 926)
Predecessor	Wang Shenzhi
Successor	Wang Yanhan
Born	unknown
Died	January 14, 927
Burial	in modern Jin'an District, Fuzhou
Full name
Full name
	Family name: Wáng (王); Given name: Yánhàn (延翰);
Era name and dates
	Tiancheng (天成) (adopted the Later Tang's era name): 926
Posthumous name
	King Si (嗣王)
House	Wang
Dynasty	Min

Wang Yanhan (Chinese: 王延翰) (died January 14, 927), courtesy name Ziyi (子逸), also known by his posthumous name as the King Si of Min (閩嗣王), was a ruler of Min during the Five Dynasties and Ten Kingdoms period of China. He ruled briefly after the death of his father Wang Shenzhi (Prince Zhongyi) without a regal title, but later declared himself king. Just two months after declaring himself king, he was overthrown and killed in a revolt by his adoptive brother Wang Yanbing and younger biological brother Wang Yanjun. Wang Yanjun took over the state thereafter.