This article explores the tradition of Koreans marrying people with the same last name, its history, and relevance in modern-day Korea. The ban on same-name marriage was lifted in 1997, but many still choose not to marry someone with the same last name due to traditional values or confusion within families. Attitudes towards same-name marriage have become more relaxed in recent years, with 63% of respondents in a survey being open to it. Family registers are used to keep track of family lineage, which can cause confusion when two people with the same last name get married. Alternative solutions include legally changing one's last name, hyphenating it, or keeping one's own last name. Same-name marriage is not unique to Korea and is seen in other countries like Iceland. The issue highlights the tension between tradition and modernization in Korean society.