Nanyang Siang Pau or Nanyang Business Daily (simplified Chinese: 南洋商报; traditional Chinese: 南洋商報; pinyin: Nányáng Shāngbào) was founded by philanthropist-entrepreneur Tan Kah Kee on 6 September 1923 in Singapore, currently published in Malaysia. Nanyang Siang Pau is currently one of oldest Chinese-language newspapers in the country, with only Kwong Wah Yit Poh being the longest-running Malaysia's Chinese newspaper. It has been published continuously except for four months in 1923 and 1924 and during the World War II between 1942 and 1945, before publication resumed on 8 September 1945.
Originally started in Singapore, the newspaper first ventured into Kuala Lumpur in 1958, but the newspaper remains printed in Singapore. In 1962, Nanyang Siang Pau moved to Kuala Lumpur, first with Jalan Travers, Brickfields and followed by Jalan Bangsar in 1972.
In August 1932, the Nanyang Daily was separated from Tan's company. The newspaper company name was changed to Nanyang Press in 1975. In 1993, Nanyang Press took over the management of another Chinese daily, China Press and a year later, its office moved to Section 7, Petaling Jaya, its current location.
Nanyang had its initial public offering (IPO) in 1989, the first Chinese daily to be listed in Bursa Malaysia. Until the late 1980s, it was Malaysia's highest-selling Chinese newspaper, before being overtaken by Sin Chew Daily, which is also the highest-selling Chinese newspaper outside of Hong Kong, Mainland China and Taiwan.
On 28 May 2001, Huaren Holdings, the investment arm of the political party MCA, bought over Nanyang Press, in a controversial transaction that led to mass boycotts of the newspaper by the Chinese community. Huaren now owns 42% of Nanyang Press (June 2005).
As at June 2005, Nanyang has raised more than RM240 million for Chinese education in Malaysia, through its Top Ten charity concerts in conjunction with Carlsberg Malaysia.