President of Armenia
Gregorian was honored by the Armenian government, the Armenian Church, and Armenian diaspora organizations. In 1999 he received the St. Gregory the Illuminator Medal, the Armenian Church's highest secular award, from Catholicos Karekin I. The National Academy of Sciences of Armenia named him an Honorary Doctor in 2001 and elected him as a Foreign Member in 2008. President of Armenia Serzh Sargsyan awarded him the Mkhitar Gosh Medal in 2013 and the Order of Honor in 2017. He met President of Armenia Armen Sarkissian on several occasions.