Tomislav Ivanišin was born in Dubrovnik in 1942.
In 1967 he qualified as an architect at the Architecture and Planning Faculty in Sarajevo, while learning painting from prof. Mladen Vukić.
In 1971 he took a Master's at Rome's La Sapienza University, having presented a dissertation on the theme of the renovation and revitalization of the Franciscan Monastery on Lopud. From 1967 he was engaged as architect on the international project Urban Plan of the Southern Adriatic, and was subsequently on the planning divisions in Dubrovnik.
He is actively engaged in painting and is a member of the Dubrovnik Croatian Association of Visual Artists. He has exhibited at numerous exhibitions, solo and collective, in Croatia.
He lives and works in Dubrovnik and at Drače, Pelješac Peninsula.