On 21 May 2012, H.E. Mr. Shahbudin Haji Musa, Ambassador of Brunei to Japan paid a courtesy call on Ambassador Bansarn Bunnag at the Thai Residence on the occasion of taking recent appointment as the Ambassador of Brunei to Japan.
On 20 May 2019, Ambassador Bansarn Bunnag together with Committee of Permanent Representatives to ASEAN based in Jakarta paid courtesy calls on various Japanese high-level representatives including H.E. Mr. Norikazu Suzuki, Parliamentary Vice-Ministers
On 18 May 2019, H.E. Mr. Bansarn Bunnag, Ambassador of Thailand to Japan, and Madam Yupadee Bunnag presided over the opening ceremony of the 17th Thai Festival in Osaka 2019. The event was organized by the Royal Thai Consulate-General in Osaka, led by Mr. Krit Tankanarat, Consul-General of Thailand in Osaka, at Taiyo no Hiroba Osaka Castle Park during 18 – 19 May 2019.
On 15 May 2019, M.L. Dispanadda Diskul, CEO of Mae Fah Luang Foundation under Royal Patronage led a delegation to pay a courtesy call on Ambassador Bansarn Bunnag at the Thai Residence. They discussed about strategies to raise awareness and broaden market opportunities in Japan
Royal Thai Embassy, Tokyo held the 20th Thai Festival in Tokyo at the Yoyogi Park on the 11 and 12 May, 2019 with the cooperation of organizations from Thailand and Japan. In the Festival, H.E. Mr. Don Pramudwinai, Minister of Foreign Affairs presided over the opening ceremony, by the invitation of H.E. Mr. Bansarn Bunnag, Ambassador, with guests of honor from Japan including H.E. Mr. Mitsuhiro Miyakoshi, Minister of the Cabinet Office. H.E. Mr. Yoshihiro Seki, State Minister of Economy, Trade and Industry and H.E. Mr. Norikatsu Suzuki Parliamentary Vice-Minister for Foreign Affairs.
On 8 May 2019, Mr. Yoshiyuki Fukuda, President of Tokyo SME Support Center and executives paid a courtesy call on Ambassador Bansarn Bunnag to express appreciation to the Ambassador and the Royal Thai Embassy for facilitating visa procedure and giving advice to their staff assigned to be stationed at their branch office in Bangkok.
On 7 May 2019, Mr. Tadao Kamei (President and CEO of Nikken Sekkei), along with Mr. Masakazu Kimura (Senior Executive Officer) and Mr. Naoto Tanaka (In charge of Business Development in Thailand) paid a courtesy call on Ambassador Bansarn Bunnag
On 6 May 2019, H.E. Mr. Bansarn Bunnag, Ambassador of Thailand to Japan, presided over the well-wishing ceremony on the occasion of the Coronation of King Rama X. The ceremony was held concurrently with the ceremony in Thailand
On 4 May 2019, Ambassador Bansarn Bunnag presided over the ceremony on the auspicious occasion of the Coronation of King Rama X at the Royal Thai Embassy in Tokyo. The ceremony was attended by Heads of Offices of Team Thailand in Japan, Thai Government officials and their families, local staff as well as Thai people in Japan, totally around 200 people.
On 22 April 2019, Ambassador Bansarn Bunnag assigned Minister Counsellor Salinee Phonprapai to be a representative to welcome the teachers and students of the expand the vision of to be globalization which is the project of Khon Kaen University at the hall of the Royal Thai Embassy.