Tanjong Pagar (alternatively spelled Tanjung Pagar) is a historic district located within the Central Business District of Singapore, straddling the Outram Planning Area and the Downtown Core under the Urban Redevelopment Authority's urban planning zones. The district is a popular tourist destination.

The name comes from the Malay language, in which it means "cape of stakes". This is probably from the stakes used by fishermen to secure fish traps, as the village's main economic activity was fishing. Today, the district is a mix of old and new buildings. One prominent landmark in Tanjong Pagar is the Tanjong Pagar railway station. Built in 1932, it ceased operations in 2011. The station, with a distinct art deco style has been repurposed into a museum as well as being the site of Cantonment MRT station, named after Cantonment Road.

Notable landmarks in Tanjong Pagar also include the Thian Hock Keng Temple, which was gazetted as a national monument in 1973. It is one of the oldest temples in Singapore and was built in the early 19th century. There is also the Baba House, a museum showcasing the country's Peranakan history, architecture and heritage. Tanjong Pagar is also known for its local street art. Prominent street art murals are often found on the sides of various shophouses and buildings within the district. There are two public housing estates in Tanjong Pagar, located at Everton Park and Spottiswoode Park; these were built from the 1970s to the 1980s. Tanjong Pagar also contains both the tallest public housing building, the Pinnacle@Duxton, and the tallest building outright, the Guoco Tower, in the country.

In addition to its cultural and architectural landmarks, Tanjong Pagar also has several eateries, from hawker centers such as the Amoy and Maxwell Food Centres to high-end restaurants. Tanjong Pagar has a number of restaurants and stalls with Michelin Bib Gourmand awards. A number of Korean restaurants has also popped up along Tanjong Pagar Road within the last few decades, leading to it being described as the Little Korea of Singapore.

The area of what Tanjong Pagar is now was said to be initially a fishing village called Salinter.

From the 1600s, Tanjong Pagar, located between the docks and the town, was an enclave for the thousands of Chinese and Indian dock workers who had migrated to Singapore from the mid-19th century.

Tanjong Pagar (Jawi: تنجوڠ ڤاڬر) in Malay means "cape of stakes", possibly due to kelongs (offshore fishing traps constructed using wooden stakes and cross pieces) along the coast from the village of Tanjong Malang till Tanjong Pagar. In George Drumgoole Coleman's 1836 Map of the Town, there is a road, Tanjong Passar, from South Bridge Road to the fishing village and there is a possibility that Tanjong Pagar is a corruption of the Tanjong Passar.

According to the Malay Annals, the villages along the coast of Singapore was constantly attacked by shoals of swordfish. The Sri Maharajah, on the advice of a boy, Hang Nadim, built a defensive structure of banana stems along the coastal side of the villages which trapped the swordfishes as they attacked the villages.