The pair held a bilateral meeting on the sidelines of the Ukraine-South East Europe Summit in Dubrovnik, Croatia.
Pirc Musar has again reiterated that Slovenia continues to support Ukraine's independence, sovereignty and territorial integrity.
According to Zelensky, the meeting "primarily focused on the implementation of a bilateral security agreement and further defence support.
Today and tomorrow, President Nataša Pirc Musar is to take part in a meeting of heads of state of the Arraiolos Group in Krakow, Poland.