Ho Hon Sing (c. 1955 – 3 August 1989; Chinese: 何汉成; Jyutping: Ho4 Hon3 Sing4; Cantonese Yale: Hòh Hon Sìhng) was a 34-year-old loan shark who was found dead on 3 August 1989 at the foot of a Housing and Development Board (HDB) block at Beach Road, Singapore.

At about 2 pm (UTC+08:00) on 3 August 1989, Yeo lured Ho into a block of flats in Beach Road on the pretext of getting some heroin there.

[5] Interviews with flat residents and Ho's wife led law enforcement to Yeo, who was arrested on 28 December and confessed to the murder.

[3] The defence argued that as Yeo had consumed heroin that day, he was not aware of what had happened when he was with Ho after they went up to the fifteenth floor.

[3] The defence sought the testimony of an expert witness, Associate Professor Edmund Lee Jon Deoon from the National University of Singapore's Pharmacology Department, about the effects of the sleeping tablets.

Associate Professor Lee testified that the tablets could have side effects of anxiety and hallucinations, which could have caused Yeo to push Ho off the building without being consciously aware of his actions.