Itsuko (variously written: 逸子 or 伊都子, 伊津子, 慈子, 五子, 五十子, 以津子, 衣津子, 溢子, 聿子) is a feminine Japanese given name. Notable people with the name include:
(born 1941), Japanese architect Itsuko Sue Nishikawa (died 2004), American baptist (1882–1976), daughter or Nabeshima Naohiro and mother of Bangja, Crown Princess Euimin of Korea