Nathan Hartono, also known by his Mandarin name 向洋, is a Singaporean singer, songwriter and actor.

Nathan quickly rose to stardom after being the first ever Singaporean to to pass the blind auditions of Chinese reality show Sing! China in 2016. He finished second overall in the final round that took place on October 7 at the Beijing National Stadium, the best result a non-Chinese citizen has ever attained in the competition since it went global in 2014.

In January 2017, he was appointed as an ambassador for the Committee to Promote Chinese Language Learning, in recognition for his achievements and for his efforts to improve his Mandarin during the course of the programme. He was also nominated for The Straits Times Singaporean of the Year award for the year of 2016.