Wallgren is a surname. Notable people with the surname include:
Arvid Wallgren (1889–1973), Swedish pediatrician Elia (Wallgrén) (born 1961), bishop of the Finnish Orthodox Church Gunn Wållgren (1913–1983), Swedish actress Henning Wallgren (born 1968), Norwegian competitive shooter Ingrid Wallgren (1923–2016), Swedish canoeist Jocke Wallgren, drummer for Swedish band Amon Amarth Karin Lundgren (née Wallgren; born 1944), Swedish sprinter Monrad Wallgren (1891–1961), American politician Thomas Wallgren (born 1958), Finnish philosopher, activist, and politician
See also Wahlgren