Sonja Härdin

{{Short description|Swedish illustrator}}

{{Infobox artist

| honorific_prefix =

| name = Sonja Härdin

| honorific_suffix =

| image =

| image_size =

| alt =

| caption =

| native_name =

| native_name_lang =

| birth_name =

| birth_date = 1945

| birth_place =

| death_date =

| death_place =

| resting_place =

| resting_place_coordinates =

| nationality = Swedish

| education =

| alma_mater =

| known_for =

| notable_works = Bert
Kamratposten
school coursebooks
Trafik-Trolle

| style =

| movement =

| spouse =

| awards =

| elected =

| patrons =

| memorials =

| website =

| module =

}}

Sonja Härdin, born 1945, is a Swedish illustrator. She illustrated all Bert books in the old series,{{cite web|url=http://www.seriegalleriet.se/main.php?exhibit=63|title=Bert & Sune av Sonja Härdin & Sören Olsson|publisher=Seriegalleriet|language=Swedish|date=2007|accessdate=17 September 2012}} except for the first Bert book, even if she illustrated the reversion edition, and she gave Bert and the other figures their characteristic looks after Sören Olsson had illustrated the original book.{{cite web|url=http://sorenolsson.blogspot.se/2008/12/illustratren-sren.html|title=Illustratören Sören|publisher=Sören Olsson's blog|author=Sören Olsson|language=Swedish|date=5 December 2008|accessdate=16 January 2015}} From Berts bekännelser the style was changed, with darker images. She has also illustrated articles in Kamratposten and school coursebooks like Nya Min matematik, which is a series of mathematics books for Swedish elementary schools. She has also illustrated Trafik-Trolle.