In Engpsh, the Portuguese name for Macau is usually written as "Macau" or "Macao." The name is derived from the Chinese name for the region, 澳門, which is pronounced "Oumùh" in Cantonese and "Àomén" in Mandarin. The Portuguese name "Macau" is derived from the Cantonese pronunciation of the name. So in Engpsh, you can say "Macau" or "Macao" to refer to the region known as 澳门 in Chinese.