Li Nanxing (Chinese: 李南星; pinyin: Lǐ Nánxīng; born 7 November 1964) is a Chinese Mediacorp actor from Singapore.

Li may be the best-known male actor in Singapore in modern times, and is widely regarded as the 'king' of Caldecott Hill, alongside Zoe Tay who is the 'queen', both having consistently been voted as the 'Top 10 Most Popular Artistes' for their respective genders in the annual Star Awards. Li has also won a couple of 'Best Male Actor' awards in the same award ceremony in his TV career which begun in 1987.

Some of his more famous shows include The Unbeatables series and The Magnate; Li has also acted in 6 telemovies to date, and even sang the theme song of several of his shows.

Li has an English name, Jonathan, which he seldom uses.

Affectionately known as Singapore's Chow Yun Fatt by Singapore media and fans from all over Asia, there is more to Jonathan Li Nanxing than meets the eye. Charming, cool and charismatic are just some of the words often used to describe Jonathan through his 18 years as a thespian

Fronting every teen magazine on the newsstands when he first started his acting career in the 80s, Jonathan has since risen to a level of stardom that only few of his contemporaries could match.

A man of many facades, Jonathan has portrayed roles diversifying from an assassin whose minimally emotive and threatening aura send chills up our spine in Life On The Line, to a virtuous and all-out cop in What a Wonderful World with heavenly king Andy Lau, to a loving husband and devoted father of quadruplets caught up in a mid-life crisis in Baby Boom. A man with many talents, Jonathan also contributes to his dramatic serials musically by singing the theme song to most of the shows that he's acted in.

But many Singaporeans, and fans across Asia, will undoubtedly remember Jonathan best, as the God of Gamblers in Singapore's drama The Unbeatables. This role solidified his image and persona in the hearts of viewers and eventually spawned 3 sequels.

With a long list of accolades to his name, it is also exactly why Jonathan Li Nanxing has been branded as the King of Caldecott Hill by his fans and co-stars.