Rokanuzzaman Khan (known as Dadabhai; 9 April 1925 – 3 December 1999) was a Bangladeshi journalist and litterateur.

[1] Khan's granduncle Mohammad Rawshan Ali Chowdhury was the editor of the monthly magazine Kohinoor.

[2] Khan worked at the Daily Ittehad in Kolkata in 1947 and in Shishu Saogat in 1949 and the Millat in 1951.

[2] Khan formed a children's organization Kochi Kanchar Mela in 1956.

[2][3] His granddaughter is a travel vlogger - manages an online community The Flag Girl, and served as the brand ambassador for Bangladesh Tourism Corporation.