Family name Sizhen (思珍 
, 思真 , Sizhen 
) , in the entire world, is a rare last name. The family name Sizhen is characteristic of China, where it is a very rare surname, Malaysia, and the United States, where it is an extremely rare surname. More prevalently, Sizhen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 思振, 思珍, 思真 | China |
| Sizhen | Canada, Singapore, United States, Malaysia, China |
Сижен, Сізген, 丝枕, 丝珍, 司振, 司珍, 司真, 司臻, 司震, 嗣振, 嗣桢, 嗣浈, 嗣珍, 嗣真, 嗣祯, 嗣臻, 嗣蓁, 嗣贞, 嗣震, 四振, 四桢, 四珍, 四真, 四贞, 四镇, 四阵, 四震, 寺镇, 巳臻, 巳震, 思圳, 思斟, 思朕, 思桢, 思瑧, 思瑱, 思甄, 思祯, 思禛, 思稹, 思箴, 思缜, 思臻, 思蓁, 思贞, 思针, 思镇, 思阵, 思震, 斯圳, 斯振, 斯朕, 斯桢, 斯榛, 斯珍, 斯甄, 斯真, 斯祯, 斯臻, 斯贞, 斯镇, 斯震, 楒真, 死朕, 泗振, 泗桢, 泗珍, 泗臻, 泗贞, 泗镇, 泗震, 祀珍, 祀祯, 肆振, 肆珍, 肆镇, 西侦, 西圳, 西振, 西朕, 西桢, 西珍, 西真, 西祯, 西箴, 西臻, 西贞, 西镇, 西阵, 西震, 锡圳, 锡振, 锡桢, 锡珍, 锡真, 锡祯, 锡臻, 锡蓁, 锡贞, 锡鉁, 锡针, 锡镇, 锡阵, 锡震, 驷振, and 驷祯