The ONA Group (Omnium Nord-Africain, Arabic: مجموعة أونا) is a defunct Moroccan holding company established in 1934 and dissolved in 2010 and succeeded by Societe Nationale d'Investissement. ONA was an industrial, financial and services conglomerate, focused on positions of leadership and value creation in business activities contributing to the growth and sustainable development of Morocco, the Maghreb Region and the African Continent. ONA Group was structured around several activities: Mining, Agribusiness, Distribution, Financial Services, Telecommunication, Renewable Energies, and Growth Drivers, etc.

The group and its successor promote various cultural programs, local and foreign arts and artists through the charitable foundation Fondation ONA.

In March 2010, ONA announced its merger with Societe Nationale d'Investissement. As a result of the merger, the two companies have been delisted from the Casablanca stock market, and the ONA agri-business branches have been disposed of. This reorganisation has transformed the conglomerate into an investment company that gives larger autonomy to its subsidiaries in the management of their affairs.

The Compagnie Générale de Transport et de Tourisme was created in 1919 by Jean Épinat. In 1928, it became an exclusive agent of General Motors in Morocco until 1945.

In 1934, it was rebranded into Omnium Nord Africain. During the same year, the ONA became a holding as it entered the mining sector.

In 1953, after World War II, all the assets of Jean Épinat became under the control of The Banque de Paris et des Pays-Bas (Paribas). King Hassan II bought Paribas’ shares in ONA and became the main shareholder of the group in 1980.

In 1982, the group started getting involved in various sectors including dairy products, sugar, banks, chemicals and textile. In 1986, ONA acquired shares in Lesieur Afrique and obtained nearly 40% of Banque Commerciale du Maroc (Morocco's Commercial Bank).

In 1988, ONA invested in the first pay-TV in the Arab world with 2M.