Nightingale–Olympic or The Nightingale–Olympic Co., LTD. (Thai: ไนติงเกล-โอลิมปิก); simply known as Nightingale was a department store in Thailand. It was the oldest department store in Thailand until 2024. The store had seven floors of three shophouses without air conditioning on Tri Phet Road in Bangkok's Wang Burapha and Phahurat neighbourhoods.

Nightingale opened in 1930 (two years before Siamese revolution) by Nat Niyomvanich, a Dawoodi Bohra descent businessman, starting with a single shophouse near Sala Chalermkrung Royal Theatre. Later, on August 5, 1966, it officially opened under the name Nightingale–Olympic.

Nightingale was considered to be a popular department in the 1960s, when the shopping centres of Wang Burapha were popular among teenagers of those days like Siam Square in modern times. It was the centre of cosmetics, stationeries, fashion clothes, lingeries, musical instruments, beauty salons, sports goods and also Thailand's first fitness club. It uses the slogan "Hub of Sporting Goods, King of Musical Instruments, Queen of Cosmetics".

In 2024, it is closed due to second-generation entrepreneur Arun Niyomvanich, younger sister of Nat, passed away in the middle of the same year at the age of 103 after running the business for decades.

• List of shopping malls in Bangkok

• Menist, Chris (2011-07-19). "Nightingale-Olympic: Bangkok nostalgia and back-breaking relics". CNN Travel.