H.M. King Bhumibol Adulyadej bestowed a special honour on St.Gabriel’s College in recognition of its being one of the top schools in the Kingdom on 10th December 1967 at St. Gabriel's College.
H.M. King Bhumibol Adulyadej bestowed a special honour on St. Gabriel’s College in recognition of its being one of the top schools in the Kingdom on 4th December 1969
H.M. King Bhumibol Adulyadej presided over the 50th anniversary celebration of St. Gabriel’s College on 11st February 1969.
H.M. Queen Ramphaiphanni presided over the opening ceremony of on Education Exhibition organized by The Association of Catholic Teachers on 19th February 1972.
H.M. Queen Sirikit presided over the opening ceremony of “Mother’s Day Project” at De Montfort Auditorium, St. Gabriel’s College on 4th October 1972.
H.M. King Bhumibol Adulyadej graciously bestowed the Knight Grand Cross (First Class) of the Most Noble Order of the Crown of Thailand on Rev. Bro. Dr. Prathip Martin Komolmas on 5th December 2004.
H.R.H. Crown Prince Maha Vajiralongkorn accepting the academic gown being offered to Him on the occasion when Assumption University awarded the Crown Prince with a Doctor Honoris Causa in Computer Engineering Management on 4th March 1998.
H.R.H. Princess Maha Chakri Sirindhorn awarded Rev. Bro. Dr. Prathip Martin Komolmas a well deserved token at Assumption University’s decoration ceremony in the Hall of Fame on 7th November 1990.
H.R.H. Princess Maha Chakri Sirindhorn graced the Silver Jubilee celebration of Assumption University on 19th January 1995 and formally inaugurated the Thakolprakieart Hall, the Queen’s Tower, Hua Mak Campus. The Princess is painting a souvenir picture for the Communication Arts Faculty of Assumption University.
H.R.H. Princess Maha Chakri Sirindhorn formally inaugurated Assumption University's Suvarnabhumi campus in the presence of His Eminence Michai Cardinal Michael Kitbunchu and Assumption University's top management on 27th June 2002.
H.R.H. Princess Maha Chakri Sirindhorn being accorded a welcome by H.E. Dr. Surapong Suebwonglee, Minister for ICT, His Eminence Michai Cardinal Michael Kitbunchu, the Provincial Superior Brother Sakda Kitcharoen, f.s.g., and the top Management of Assumption University when she arrived to inaugurate the Dr. Srisakdi Charmonman IT building at the Suvarnabhumi campus on 20thAugust 2004.
H.M. Queen Fabiola of Belgium and H.R.H. Princess Maha Chakri Sirindhorn visited Assumption University and attended Mass at the Chapel of the Annunciation, Assumption University, Hua Mak Campus on 18th October 1998.
Rev. Bro. Dr. Prathip Martin Komolmas presenting a token of appreciation to H.R.H. Princess Soamsawali at the opening ceremony of the Academic Exhibition "The Father of Thai Nation" at Seacon Square, Bangkok on 8th July 1999.
H.R.H. Princess Soamsawali being greeted upon her arrival at Assumption University's John XXIII Conference Center, by the top management of Assumption University, when she graciously presided over the opening ceremony of the 22nd International Conference of FILLM. on 19th August 2002.
Rev. Bro. Dr. Prathip Martin Komolmas, President Emeritus was awarded the honorary degree of Doctor of Philosophy in Educational Management during Commencement Exercises held on 8th  August 2006 by Christian University.
H.R.H. Princess Soamsawali received greetings from the President and President Emeritus of Assumption University in the Commorative Exhibition honoring His Majesty the King on 30th November 2007.
H.R.H. Princess Ubolratana kindly inaugurated the Asian Youth Forum at Assumption University's Suvarnabhumi campus on 20th November 2003. At Her arrival, Assumption University's top management accorded the Princess a formal welcome.
H.R.H. Princess Galyani Vadhana arrived at the John XXIII Conference center, Assumption University Suvarnabhumi campus to presided over a conference organized by the Ruamjit Nomklao Foundation. on 12nd March 2002.
H.R.H. Princess Suthasirisopha graciously attended a play based on musical compositions of H.M. the King presented at Chalermkrung Royal theator as one of Assumption University's commemoration at the Golden Jubilee of H.M the King's Accession to the throne. on 8th December 1996.