去海外生可以申请坡籍，需爸爸签字，ICA网站就有答案申请新加坡国籍的条件第四条： Eligibility 里面最后一条： Child born outside Singapore where at least one parent is a Singapore Citizen. 这种情况里的最后一条就是针对婚外私生子的： An overseas-born minor (child) may be eligible for Singapore Citizenship by Descent under Article 122(1) of the Constitution of the Republic of Singapore, if his/her parents meet any of the following conditions: Male Singapore citizen by Birth who has a lawful marriage at time of minor's birth Male Singapore citizen by Registration who has a lawful marriage at time of minor's birth and minor does not acquire citizenship of the country he was born by reason of his birth in that country Female Singapore citizen by Birth and minor born on or after 15 May 2004 Female Singapore citizen by Registration and minor born on or after 15 May 2004. Minor shall not acquire citizenship of the country he was born by reason of his birth in that country Male (who has a lawful marriage at time of (more...)