Lyddia Cheah Li Ya (simplified Chinese: 谢沂逾; traditional Chinese: 謝沂逾; pinyin: Xiè Yíyú; born 8 September 1989, also known as Lyddia Cheah Yi Yu) is a Malaysian badminton player.

[4] In 2009, she won a bronze medal at the Southeast Asian Games in the women's singles event.

She lived up to expectations when she easily overpowered Singaporean seventh seed Liang Xiaoyu.

[7] As an independent player she joined the AirAsia Badminton Academy in 2014 and resumed her international career.

In August 2015 she signed with team Derby in the United Kingdom to participate in England's National Badminton League.