The Oman Investment Fund (OIF) was Oman's inaugural sovereign wealth fund, established in 2005 through a royal decree to manage and invest the country's surplus oil revenues both domestically and internationally. Its primary objectives were to diversify Oman's economy away from oil dependency, support national development projects, and generate long-term returns for future generations. The fund managed a diverse portfolio including stakes in local infrastructure, real estate, and global equities, bonds, and alternative investments, with assets under management growing significantly over the years. Throughout its operation, the OIF played a key role in Oman's economic strategy, funding initiatives in sectors like energy, tourism, and logistics while adhering to principles of transparency and sustainable investment. In 2020, as part of broader fiscal reforms under Sultan Haitham bin Tariq and Oman's Vision 2040, the fund underwent a major restructuring and was integrated into the newly formed Oman Investment Authority (OIA), which absorbed all of OIF's assets and operations to streamline sovereign wealth management and enhance governance. This merger marked the end of the OIF as a standalone entity, with the OIA taking over its mandate to promote economic diversification and attract foreign investment.