Toh Chin Chye DUNU (Chinese: 杜进才; pinyin: Dù Jìncái; Pe̍h-ōe-jī: Tō͘ Chìn-châi; 10 December 1921 – 3 February 2012) was a Singaporean statesman and academic who served as Deputy Prime Minister of Singapore between 1959 and 1968.

Toh attended St George's Institution in Taiping, and Anglo-Chinese School in Ipoh before graduating from Raffles College (now the National University of Singapore) in 1946 with a diploma in science.

[7] The founding members were subsequently restored when many of the leftist leaders were arrested by Chief Minister Lim Yew Hock in his anti-communist crackdown, allowing for the restoration of the original "basement group" of Toh, Lee Kuan Yew and Goh Keng Swee, et al. to the party's Central Executive Committee (CEC).

Following this, Toh implemented a cadre system to prevent from the newcomer "ordinary members", including leftist sympathisers, from having undue influence over the membership of the CEC.

He managed to defeat Barisan Chairman Lee Siew Choh by a mere 89 votes in the 1963 general election, his narrowest electoral victory.

In 1954, Rajaratnam co-founded the People's Action Party (PAP) together with Lee Kuan Yew, Toh Chin Chye, Goh Keng Swee and others.

While his role to reorient the university's focus to suit the fledgling nation's needs was applauded, he was perceived as authoritarian, when he clamped down on student demonstrations and political activities.

[9] In 1996, a front-page article in Singaporean tabloid The New Paper claimed that Toh had killed a pedestrian in a hit-and-run accident while driving drunk.

In February 2006, Toh was featured in The Straits Times again, paying his last respects to the late former Deputy Prime Minister S. Rajaratnam at his home in Chancery Lane.

[14] As a mark of respect for his contributions to Singapore, his coffin was draped in the national flag and borne on a ceremonial gun carriage to the crematorium.