Night markets or night bazaars (Chinese: 夜市) are street markets which operate at night and are generally dedicated to more leisurely strolling, shopping, and eating than more businesslike day markets. The culture of night markets originates from China and have spread globally with overseas Chinese populations. They are typically open-air markets popular in East Asia, Southeast Asia, and Chinatowns in several other regions of the world.

The concept of the night market traces its roots back to the medieval Chinese Tang dynasty. The Tang government put strict sanctions on night markets and their operations in A.D. 836. Towards the end of the Tang dynasty, economic expansion led to less state regulation and restrictions being lifted on night markets. During the Song dynasty (960–1279), night markets played a central role in Chinese nightlife. These markets were found in corners of large cities. Some stayed open for twenty-four hours. Song period night markets are also known to have included restaurants and brothels due to being frequently located near business districts and red light districts.

Night markets are popular in Chinese culture; they are especially common in East and Southeast Asia, found in China, Hong Kong, Macau, Taiwan, as well as Overseas Chinese communities across Thailand, Cambodia, Vietnam, Singapore, Malaysia, Indonesia to the Philippines. Nevertheless, night markets are more prominent within ethnic Chinese economic and cultural activities. Some well-known night markets exist in Taipei, Kaohsiung, Shanghai, Beijing, Guangzhou, Hong Kong, Singapore, and Bangkok, but they also exist in Chinatowns worldwide.

Taiwan has over 700 night markets. The larger and more formal of these markets might take place in purpose-built marketplaces while smaller or more informal ones tend to occupy streets or roads that are normal thoroughfares by day.

Night markets are commonly known as Pasar Malam by the locals, which literally means night market, "pasar" being related to "bazaar" in Persian or also the meaning "market" in Malay/Indonesian, and "malam" meaning "night". A pasar malam is a street market in Indonesia, Malaysia and Singapore that opens in the evening, usually in residential neighbourhoods.

It brings together a collection of stalls that usually sell goods such as fruit, vegetables, snacks, toys, clothes, movie discs and ornaments at cheap or at least reasonable prices. A pasar malam often takes place only one to a few days of the week, as the traders rotate around different neighbourhoods on different days of the week. Haggling over prices is a common practice at such markets.

Today, several kecamatan (district) in Jakarta and also other provinces in Indonesia, hold weekly pasar malam, usually held every Saturday night in nearby alun-alun square, open fields or marketplaces. In Indonesia, pasar malam has become a weekly recreational place for local families. Other than selling variety of goods and foods, some pasar malam also offer kiddy rides and carnival games, such as mini carousel or mini train ride.

Night markets are popular in Auckland, the biggest city in New Zealand, Wellington, the capital city of New Zealand, and in small regional cities and towns like Hamilton, Flaxmere and Waitara. The first night market in Auckland was opened in 2010 in Pakuranga. By 2019, night markets can be found in Auckland seven nights a week. Typically, night markets in Auckland are being held in shopping mall carparks. They offer food from Asia and Europe, as well as Māori and Pacific cuisines. There are also specialist pop-up night markets that serve one kind of food (such as noodles). In 2019, food delivery services from Auckland night markets were also introduced. In 2020, during the COVID-19 pandemic, the night markets in Auckland introduced the use of an app for contactless orders and payments so that social distancing can be managed.