Kotak is a surname. Notable persons with that name include:
İsmet Kotak (1939–2011), Turkish Cypriot politician Karishma Kotak (born 1982), Indian model and actor Marni Kotak (born 1974), American artist Shitanshu Kotak (born 1972), Indian cricketer Uday Kotak (born 1959), Indian businessman Vaju Kotak (born 1915), Indian writer