Walter Kwok Ping-sheung JP (Chinese: 郭炳湘; Cantonese pronunciation: [kʷɔk̚˧ pɪŋ˧˥.sœŋ˥]; 1950 – 20 October 2018) was a Hong Kong real estate developer.

[1] Kwok was kidnapped by the notorious gangster "Big Spender" Cheung Tze-keung on 30 September 1997,[8] and was released seven days later without police intervention.

Following his arrest in Guangzhou in 1998, Cheung confessed that he had put Kwok in a wooden container blindfolded for four days, and fed him regular meals of roast pork with rice, until the ransom of some HK$600 million was paid.

The ransom in 1,000-dollar notes was packed inside 20 large carrier bags and driven in two Mercedes saloon cars to a quiet lane in Central district.

[4] As a result of his kidnapping ordeal, Kwok reportedly developed deep psychological problems, and while he retained the titles of chairman and chief executive, his two brothers Thomas and Raymond controlled day-to-day operations of the group.

[12] On 18 February 2008, Sun Hung Kai Properties issued a statement saying Kwok would take a temporary leave of absence for personal reasons with immediate effect.

[21] In 2012, Kwok's younger brothers Thomas and Raymond, as well as Rafael Hui, previously the second-highest ranking government official in Hong Kong, were arrested by the city's anti-corruption agency on suspicion of bribery.

[23] Kwok's parents introduced him to Lydia Ku Chee-yung, the daughter of a wealthy businessman from Shanghai, whom he married on 15 September 1982, but the marriage broke up six months later.