The three-volume set LNCS 12771-12773 constitutes the refereed proceedings of the 13th International Conference on Cross-Cultural Design, CCD 2021, which was held as part of HCI International 2021 and took place virtually during July 24-29, 2021.The total of 1276 papers and 241 posters included in the 39 HCII 2021 proceedings volumes was carefully reviewed and selected from 5222 submissions.The papers included in the HCII-CCD volume set were organized in topical sections as follows:Part I: Cross-cultural experience design; cross-cultural product design; cultural differences and cross-cultural communication;Part II: Culture, arts and creativity; culture, learning and well-being; social change and social development;Part III: CCD in cultural heritage and tourism; CCD in autonomous vehicles and driving; CCD in virtual agents, robots and intelligent assistants.