Singapore English (SgE, SE, en-SG) is the set of varieties of the English language native to Singapore. In Singapore, English is spoken in two main forms: Singaporean Standard English, which is grammatically similar to British English, and Singaporean Colloquial English—better known as Singlish—the colloquial register of English spoken between Singaporeans. Many Singaporeans code-switch between the two forms where necessary; hence, Singapore English can be described as diglossic.
Singapore is a cosmopolitan society. In 2020, nearly half of Singaporeans of Chinese descent reported English as their main language at home, while only a third spoke Mandarin. The remaining spoke various varieties of Chinese such as Hokkien, Cantonese or Teochew. Most Singaporeans of Indian descent speak either English or a South Asian language. Many Malay Singaporeans use Malay as the lingua franca among the ethnic groups of the Malay world, while Eurasians and mixed-race Singaporeans are usually monolingual in English.