Women in Japan period to 100 days and allows any woman who is not pregnant during the divorce to remarry immediately after divorce. The Civil Code of Japan requires legally married spouses to have the same surname. Although the law is gender-neutral, meaning that either spouse is allowed to change his/her name to that of the other spouse, Japanese women have traditionally adopt their husband’s family name and 96% of women continue to do so as of 2015. In 2015, the Japanese Supreme Court upheld the constitutionality of the law, noting that women could use their maiden names informally, and stating that it
Surname law Western-style surnames. Only names with Turkish origin were permitted, and non-Turks with pre-existing surnames were required to adopt new Turkish names. Surname law Surname law can refer to any law regulating the use of surnames. Icelandic law enforces the conventions of Icelandic names, which require that the last name be derived from a given name of the father or mother, suffixed with "-son" or "-dóttir". The law allows both derivations to be used, and for foreign last names to be inherited or kept by foreigners. This means that a father, mother, and child will all typically have different last names.