Kelvin Lim Hock Hin (林福兴 Lín Fúxīng; born 1968), a Singaporean citizen, is a convicted sex offender who committed various sexual offences against young boys between 1988 and 1996.

His modus operandi was to gain the trust of his victims as a friend and entice them to have sex with him by offering them free tuition and toys.

After his arrest, Lim was tried in a district court for nine counts of unnatural sex, which included carnal intercourse with a minor.

[2][3] About three years after his release from his first prison sentence, Kelvin Lim once again returned to court for four counts of sexually abusing a nine-year-old boy whom he tutored for free.

In September 1995, three months after his release, Lim met his first two victims, a pair of brothers aged ten and 12, at a game arcade in Queenstown Shopping Centre.

After the teachers probed the victims about these events, a police report was filed against Lim, who was arrested on 6 November 1996 for these latest string of sexual offences.

[12] Under the Penal Code in 1997, the crime of having anal intercourse with a minor (the most serious charge Lim faced at that point) carried a sentence of either life imprisonment or up to ten years in prison.

Lim, who was unrepresented, was prosecuted by Deputy Public Prosecutor (DPP) Ferlin Jayatissa for these ten counts, and the trial was presided over by veteran High Court judge T. S. Sinnathuray, who was best known for sentencing infamous child killer Adrian Lim to death for murdering two children at Toa Payoh in 1981,[14] as well as sentencing British spree killer John Martin Scripps to death for killing a South African tourist in 1995.

[25] The appellate court's three judges – consisting of Chief Justice Yong Pung How, Judges of Appeal Thean Lip Ping (L P Thean) and M Karthigesu – took into consideration Lim's refusal of medical treatment, lack of familial support, and the great danger he posed to society given his paedophilic condition.

They also affirmed the trial judge's findings that Lim was fully aware of the magnitude of his crimes and was still able to exercise his full control in making a choice of whether to give in to his sexual desires.

[26][27] Extracted from Lim Hock Hin Kelvin v Public Prosecutor [1997]: There were no significant mitigating factors in this case.

The learned judge (Sinnathuray) had found, rightly in our opinion, that paedophilia is not a disease or a physical illness but is a disorder.

The learned judge found that the appellant (Lim) had a choice of whether to commit paedophilic offences against the victims, and chose to do so.

It was possible that with good behavior, Lim would gain parole in 2023 at age 55 after completing at least two-thirds of his sentence (equivalent to 26 years and eight months).

Dr Liow Pei Hsiang, who appeared in Lim's trial, also gave her opinion during an interview on the show that it is necessary for a paedophile to come forward for psychiatric treatment as early as possible before he may potentially commit a sexual offence with minors; she also stated that parents should be more mindful of their children, teaching them children to differentiate between what is a "good touch" or "bad touch" (referring to touching private parts or areas that made a child uncomfortable) and to beware of strangers.