- 10/02/1932 – Friendship Treaty with exchange of notes
- 28/09/1968 – Exchange of notes for the acquisition of the Villa situated in Viale Regina Margherita 260 in Rome as Saudi Arabia Embassy in Italy
- 06/02/1973 – Agreement for Cultural, Scientific and Technical Cooperation
- 04/03/1975 – Agreement for Economic, Industrial, Technical and Financial Cooperation
- 24/11/1985 – Agreement to Prevent Double Taxation on revenues and assets stemming from air navigation
- 17/02/1993 – Agreement for Cooperation between the two Ministries of Defense
- 16/12/1995 – Memorandum of Understanding for fighting international terrorism, trafficking of illicit substances and organized crime
- 10/09/1996 – Agreement on the mutual promotion and protection of investments, with Protocol
- 07/02/2000 – Memorandum of Understanding for Bilateral Consultations between the two Ministries of Foreign Affairs
- 13/01/2007 – Agreement to prevent Double Taxation
- 19/05/2023 – Memorandum of Understanding for cultural cooperation between the two Ministries of Culture
SIGNED ON THE OCCASION OF THE VISIT IN ROME OF KING ABDULLAH:
- 06/11/2007 – Agreement for defense cooperation
- 06/11/2007 – Agreement for cooperation against organized crime
- 06/11/2007 – Memorandum of Understanding for scientific cooperation
- 06/11/2007 – Memorandum of Understanding for health cooperation
- 06/11/2007 – Memorandum of Understanding for educational training cooperation
SIGNED ON THE OCCASION OF THE VISIT IN AL ULA OF MINISTER OF FOREIGN AFFAIRS AND INTERNATIONAL COOPERATION LUIGI DI MAIO:
- 10/01/2021 – Memorandum d’Intesa on the Strategic Dialogugue
SIGNED ON THE OCCASION OF THE VISIT TO RIAD BY THE MINISTER OF FOREIGN AFFAIRS AND INTERNATIONAL COOPERATION LUIGI DI MAIO:
- 27/06/2022 – Memorandum of Understanding between the Italian Space Agency and the Saudi Space Commission