Sergio Della Pergola (Hebrew: סרג'ו דלה-פרגולה; born 7 September 1942) is an Italian-born Israeli demographer, statistician, and professor.

[1] After World War II, the family settled in Milan, where Della Pergola was an active member of Jewish youth movements and student organizations.

He is Professor Emeritus of population studies at the Hebrew University’s Avraham Harman Institute of Contemporary Jewry, where he was the Institute Chair and Director of the Division of Jewish Demography and Statistics and held the Shlomo Argov Chair in Israel–Diaspora Relations.

[4] Della Pergola is a specialist on the demography of world Jewry and has published numerous books and over two hundred papers on historical demography, the family, international migration, Jewish identification, and population projections in the Jewish diaspora and in Israel.

He has lectured at over 70 universities and research centres in Western Europe, North America, and Latin America, and served as a senior policy consultant to the President of Israel, the Government of Israel, the Jerusalem Municipality, and many major national and international organizations.