The 1991 World Table Tennis Championships mixed doubles was the 41st edition of the mixed doubles championship.^[1][2]

Wang Tao and Liu Wei defeated Xie Chaojie and Chen Zihe in the final by three sets to nil.^[3]

	Round of 16									Quarterfinals									Semifinals									Final
		Yoo Nam-kyu Hyun Jung-hwa	22	16
		Xie Chaojie Chen Zihe	24	21							Xie Chaojie Chen Zihe	21	21	24
		Jörg Roßkopf Nicole Struse	21	21							Roßkopf Struse	14	15	22
		Zhang Lei Qiao Yunping	19	18																Xie Chaojie Chen Zihe	21	21	21
		Kalinikos Kreanga Otilia Bădescu	17	21	21															Kreanga Bădescu	15	19	14
		Lo Chuen Tsung Chai Po Wa	21	13	16						Kreanga Bădescu	21	21	21
		Chu Kyo Sung Kim Hye Yong	21	21							Chu Kyo Sung Kim Hye Yong	8	12	13
		Chen Zhibin Gao Jun	16	16																									Xie Chaojie Chen Zihe	14	19	14
		Jean-Philippe Gatien Xiaoming Wang-Dréchou	21	21																									Wang Tao Liu Wei	21	21	21
		Li Sung-il Hong Cha-ok	16	14							Gatien Wang-Dréchou	11	13	21	12
		Wang Tao Liu Wei	21	21							Wang Tao Liu Wei	21	21	19	21
		Choi Gyong Sop Park Kyung Ae	12	13																Wang Tao Liu Wei	21	10	21	23
		Kim Song-hui Li Bun-hui	21	21																Kim Song-hui Li Bun-hui	18	21	17	21
		Kang Hee Chan An Hui-Suk	17	12							Kim Song-hui Li Bun-hui	21	21	21
		Wei Qingguang Deng Yaping	17	21	21						Wei Qingguang Deng Yaping	18	15	11
		Damien Éloi Sandrine Derrien	21	11	13

List of World Table Tennis Championships medalists