Nimali Waliwarsha Konda Liyanarachchi (born 19 September 1989) is a Sri Lankan 800 m runner and current national record holder in women's 1500m event.

She claimed bronze medal in the women's 800m event during the 2015 Asian Athletics Championships in Wuhan after finishing with a timing of 2: 03.94 minutes just behind the Tintu Lukka of India and Zhao Jing from China.

She represented Sri Lanka at the 2016 South Asian Games which was held in Guwahati and claimed gold medal in 800m event with a timing of 2: 09.40 minutes.

During the same year's Asian Championships, in the women's 800m heat event the winning athlete was disqualified after Liyanarachchi argued that she had been unfairly jostled in the sprint for the line.

[21] The following year, she won the bronze medal behind the Chinese duo Wang Chunyu and Hu Zhiying at the 2018 Asian Indoor Athletics Championships in Tehran with a timing of 2:10.83 minutes.

[26][27] She also represented Sri Lanka at the 2019 Military World Games and claimed silver medal in the 800 meters just behind Ukrainian Natalija Krol with a timing of 2: 06.14 minutes.

[42][43] On 31 July 2021, a social media post was shared more than 7000 times which indicates the photo of Nimali Liyanarachchi having her name tagged with safety pins on her jersey during the women's 800m event.

The post also included that 60 sports officials had accompanied the Sri Lankan contingent for the Olympics and as a result the resources for the athletes had been stretched.

[44] Sports minister Namal Rajapaksa during a parliamentary session, insisted that Nimali had forgotten her running shoes prior to competing in the women's 800m heat event at the Tokyo Olympics.

[45] However, Nimali refuted the allegations stating that she had brought her spikes in her hand luggage for the Games and she revealed that false and misinformation was conveyed to Namal Rajapaksa.