Nikola Kovacevic was born in 1933 in village Mazin in Lika, Republic Croatia. During WW2, until 1945, he is a prisoner together with his mother. He was engaged in agriculture and he kept sheep.
Since 1954 he is in military service in Osjek and Pitomača. After his military service he returns to his home village where he finds employment as a forester. In 1958 he leaves Mazin and finds a job in Varaždin. In 1960 he moves to Zagreb were he becomes a police officer. In the same time he starts painting oil on glass.

He displays for the first time in 1964 in Zagreb in the gallery of the Society of independent naive artists of Croatia. A year later he holds his first independent show in Zagreb.
Since then he displays around the world – from Italy, Germany, France to USA and Argentina …
He moves from Zagreb to Petrovaradin in 1992 where he paints oil on canvas, equally successfully as on glass.

He displayed in more then 30 independent (Treviso, Berlin, Turin, Milan, Vienna...) and in more then 50 collective displays in the country and abroad (Paris, Washington, Munich, Milwaukee, Zurich, Bologna, Laussanne, DeCahors...)

His work can be found in many private collections around the world.
He lives and creates in Petrovaradin.