Surname Hongzi (红子 
, 红仔 , Hongzi 
) , worldwide, is a rare last name. The last name Hongzi is characteristic of Eastern Asia, particularly China, where it is a very rare surname. More frequently, Hongzi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 红子, 红仔 | China |
| Hongzi | United States, Ecuador, China |
宏仔, 宏兹, 宏姿, 宏子, 宏字, 宏梓, 宏滋, 宏紫, 宏自, 宏资, 宏锡, 宏齐, 弘姿, 弘子, 弘恣, 弘梓, 弘资, 弘锡, 弘齐, 泓字, 泓孜, 泓梓, 泓滋, 泓锡, 洪仔, 洪姿, 洪子, 洪字, 洪孜, 洪梓, 洪滋, 洪紫, 洪资, 洪辎, 洪锡, 洪齐, 烘仔, 紅仔, 紅子, 紘齐, 红兹, 红姿, 红字, 红恣, 红梓, 红滋, 红籽, 红紫, 红自, 红资, 红锡, 红齐, 虹仔, 虹姊, 虹姿, 虹子, 虹孜, 虹梓, 虹自, 虹锡, 虹齐, 轰子, 鴻籽, 鸿仔, 鸿姿, 鸿子, 鸿字, 鸿孜, 鸿梓, 鸿滋, 鸿紫, 鸿锡, and 鸿齐