The envoys also met Khyber Pakhtunkhwa Governor Sardar Mehtab Khan Abbasi and condoled the deaths of innocent people.
The Army Public School (APS) in the cantonment city here was attacked by the Tehrik-i-Taliban Pakistan (TTP) militants on December 16 last year, killing 150 innocent people.
Later, the diplomats also visited the Military Hospital in Peshawar to show solidarity with the bereaved families of APS Peshawar attack and enquired about the well being of injured students.
The delegation included the ambassadors of Australia, France, Germany, Saudi Arabia, Netherland, South Korea, Turkey, UAE and UK.