Hong Kong (model), China
"Since Hong Kong does not designate itself or any part of itself as a city, there is no mayor or city council; therefore, the City Hall does not hold the offices of a city government, unlike most city halls around the world. Instead, it is a complex providing municipal services, including performing venues and libraries." -- Wikipedia
Mumbai (Bombay), India
1820-1835; Colonel Thomas Cowper, architect
Naypyidaw, Myanmar (Burma)
Singapore
1926 to 1929; A. Gordans and F. D. Meadows, architects
"In 2015, The City Hall, together with the adjacent Old Supreme Court Building, has been converted into the National Gallery Singapore." -- Wikipedia
Tokyo, Japan
1990; Kenzo Tange, architect