Kopi (Chinese: 咖啡; Pe̍h-ōe-jī: ko-pi), also known as Nanyang coffee, is a traditional coffee beverage found in several Southeast Asian nations. Often brewed to be highly caffeinated, it is commonly served with sugar and/or milk-based condiments. The drink originated during the British Malaya era and has Hainanese cultural roots. Its name is derived from the Malay term for coffee. The term Nanyang, which means "south sea" in Mandarin, refers to Southeast Asia. Kopi-culture vocabulary is grounded in the Hokkien language as a result of historical immigration to Southeast Asia from the Minnan region of Fujian Province, in southeastern China. The beverage is usually served in coffee shops, hawker centres, and kopitiams across the region.

In Singapore, kopi is recognized as culturally significant and part of everyday diet and lifestyle. Singapore coffee is distinct from other types due to its roasting process and preparation technique involving a variation of the Torrefacto method. Concerns over the elevation of diabetes cases have caused the creation of government-led nationwide campaigns in Singapore to reduce sugar intake, especially with regard to sweet drinks or drinks that add large amounts of sugar, such as kopi. The significance of kopi in Singapore's culture can be explored in greater detail in the country's kopi museum.

This transcendence of the Hokkien language in local kopi culture can be linked to the prominence of Hokkien immigrants in Malaya and colonial Singapore. According to the history of Chinese immigration, millions of China residents left due to natural calamities and political instability during the 19th century. In the beginning, 50,000 Chinese landed in Singapore—many of them Chinese traders. This number grew to 200,000 in 1900 as more passed through the Malay States and Dutch East Indies into Singapore. Amongst the arrivals, the Hokkiens made up the largest proportion of Chinese dialect groups in Singapore. Thus, they also came to possess a dominant share of the banking, manufacturing and trade industries.

Variations in style of traditional coffee revolve around denseness, sugar level, and additions of evaporated milk, condensed milk or ice. Local Kopi vocabulary governs the way consumers order their preferred style of Kopi in Malaysia and Singapore.

Kopi is a Malay term and is used in conjunction with different Chinese languages, including Hokkien, Cantonese and Mandarin. In Singapore, there are at least 54 core variations of Kopi with different customisation on sugar, temperature and thickness. These terms are recognised in hawkers and coffee shops nationally.

The terms used to order these variations in Singapore, along with their respective meanings, can be found below.

In addition to local variations, there are also diverse overseas combinations and variations of Kopi. This includes Yuenyeung (鸳鸯) or Kopi Cham which is a mixture of coffee and tea popular in Malaysia and Hong Kong. Kopi is also otherwise known as Nanyang coffee. Nanyang means 'South Sea' in Mandarin, and usually references to Southeast Asia.

Younger generations of Singaporeans have created modern twists and recipes involving Kopi. An example is Coffee Break at Amoy Street that offers Almond Ginger Kopi which embodies a spicy and nutty flavor. This depicts an existing progression away from the traditional methods of preparing Kopi in Singapore.