Singaporean Hokkien^{[lower-alpha 2]} is a local variety of the Hokkien language spoken natively in Singapore. Within Chinese linguistic academic circles, this dialect is known as Singaporean Ban-lam Gu.^{[lower-alpha 3]} It bears similarities with the Amoy^{[lower-alpha 4]} spoken in Amoy, now better known as Xiamen, as well as Taiwanese Hokkien which is spoken in Taiwan.^[7]

Hokkien is the Min Nan pronunciation for the province of Fujian, and is generally the term used by the Chinese in Southeast Asia to refer to the 'Banlam' dialect.^{[lower-alpha 5]} Singaporean Hokkien generally views Amoy as its prestige dialect, and its accent is predominantly based on a mixture of Quanzhou and Zhangzhou speech, with a greater inclination towards the former.

Like many spoken languages in Singapore, Singaporean Hokkien is influenced by other languages or dialects spoken in Singapore. For instance, Singaporean Hokkien is influenced to a certain degree by Teochew, and is sometimes regarded as a combined Hokkien–Teochew speech.^{[lower-alpha 6]} In addition, it has many loanwords from Singapore's four official languages of English, Malay, Mandarin and Tamil.

Nevertheless, the grammar and tones of Singaporean Hokkien are still largely based on Banlam. When compared to the Taiwanese accent^{[lower-alpha 7]} spoken in Tainan and Kaohsiung, the accent and pronunciation of Singaporean Hokkien inclines toward the Quanzhou accent, which is also close to the pronunciation of Taipei and Xiamen, and is less close to that of Tainan, which has a greater inclination towards the Zhangzhou accent.^{[lower-alpha 8]}

From the 19th until the early half of the 20th century, there was a large influx of Chinese migrants from southern China into Singapore. This led to Chinese constituting almost 75% of Singapore's population. Of these Chinese, many originated from the regions of Amoy/Xiamen, Quanzhou and Zhangzhou in Fujian province. They brought Min Nan to Singapore, which was then propagated throughout the Malayan region. As there was no formal Chinese name for Min Nan in the early 20th century, these migrants began to use their place of origin as the name of their speech, and thus called the dialect "Hokkien", referring to Fujian province.

During the 19th century, many traditional private Chinese schools in Singapore (referred to as 私塾仔; su-sio̍k-á) generally used Hokkien to teach Chinese classics and Classical Chinese. However, by the early 20th century, Mandarin began to replace Hokkien as the medium of instructions in Chinese schools after the founding of many Mandarin-medium schools.

During the 1950s and 1960s, many political speeches in Singapore were in Hokkien, in order to reach out to the Chinese community in Singapore. There was also a thriving Hokkien cultural scene that included Hokkien story-telling, opera, and media in Singapore.

After 1979, the Singapore government began to push for the use of Mandarin in Singapore, spearheaded by the Speak Mandarin Campaign. Following this, the Singapore government also began to employ a more stringent censorship, or ban, of Hokkien media in the Singaporean Chinese media. Consequently, all Hokkien-language media in Singapore had to be dubbed in Mandarin before being allowed to stream on national TV.

In addition, the 1980s saw Chinese-medium education replaced by that in English, causing English to emerge as the most widely used language in Singapore. The emergence of the English language, coupled with heavy promotion of Mandarin, generally led Hokkien to decline in Singapore after 1979.

Today, the lingua franca of the Chinese community in Singapore is Mandarin. Although Hokkien is still widely spoken in Singapore today, it is not as widespread as before and is mostly restricted to the older generations. The most common places to hear Hokkien spoken in Singapore are at the country's hawker centres or kopi tiams.

Speaking ability varies amongst the different age groups of the Hokkien Singaporeans. The elderly are generally able to communicate effectively in Hokkien. On the other hand, the middle and younger generations, while generally proficient, have generally lost the ability to communicate as fluently. However, when it comes to using profanities, majority of the younger generation, even among non-Chinese Singaporeans, listed Hokkien as the first out of all languages and dialects. With the Speak Mandarin Campaign from the government, the Hokkien speaking population has been on a gradual decline.

Note: In this article, the Tâi-lô romanization system is used.

There are some differences between the sentence structure used by Singaporean Hokkien and by Amoy/Taiwanese Hokkien.

For instance, when asking a question "do you want to...?", Singaporean Hokkien typically uses the sentence structure 愛……莫？ (ai…mài?), whereas Taiwan uses 欲……無？ (beh…bô?). The word 愛 (ai) is commonly used in Singaporean Hokkien to mean "want to", but in Amoy Hokkien and Taiwan Hokkien, the word 欲/卜 (beh) (which means "want" in Hokkien) is used instead. 愛 (ai) in Amoy and Taiwanese Hokkien it typically means "love to" or "need to".

Also, unlike Taiwanese Hokkien—which typically uses the word 敢 (kám) (meaning "whether or not") when asking a question, which is more formal or polite—Singaporean Hokkien does not use the word 敢 (kám). Instead, it simply adds the word 無 (bô) at the end of the sentence to indicate that it is a question (similar to Mandarin's 嗎 (ma) or adds a Cantonese intonation 咩 (me1) at the end. Adding the word 無 (bô) at the end of a sentence is also used in Taiwanese Hokkien, when one is asking a question in an informal way.

The following list shows the colloquial readings of the numerals used to count objects.

Most ordinal numbers are formed by adding 第 (tē) in front of a cardinal number. In some cases, the literary reading of the number must then be used. For example, 第一 = tē-it, 第二 = tē-jī.

There are minor differences between Singaporean Hokkien and Amoy or Taiwanese in terms of vocabulary, pronunciation, and grammar. Amoy and Taiwanese bear close resemblance, and are usually considered the prestige dialect of Hokkien, differing only in terms of vocabulary.

Because Singapore is a multilingual country, Singaporean Hokkien has been influenced by many other languages spoken in Singapore. As a result, there are many non-Hokkien words that have been imported into Singaporean Hokkien, such as those from Malay, Teochew, Cantonese, and English.

Certain colloquial pronunciations of Singaporean Hokkien words are directly inherited from the consonant system of Old Chinese. Hokkien did not experience a great phonological change throughout the transition period from Old Chinese to Middle Chinese.

Min dialects, including Hokkien, preserved a unique feature of Old Chinese: it does not have labiodental consonants. For instance, the word "分" is pronounced as fen in Mandarin, but as pun in Hokkien. This marks a major difference between Old Chinese and Middle Chinese.^[10]

There are some letters written in Pe̍h-ōe-jī from early Hokkien migrants in Singapore.

An example was provided by the descendant of Tan Book Hak, a cousin of Tan Kah Kee.^[14]

Singapore's Chinese name "新加坡" (sin-ka-pho) originated from Hokkien's transliteration of "Singapore". In addition, there are many other place names in Singapore that originated from Hokkien: Ang Mo Kio and Toa Payoh, for instance.