Executive Summary Oil Palm is the world's main source of vegetable oil due to the highest efficiency in land usage compared to soybean, rapeseed, and sunflower oil. Indonesia and Malaysia are the world's largest producers and exporters of Crude Palm Oil, contributing up to 87% (66.9 Mio Tons) of the total world production, in which Indonesia and Malaysia produce 62% (47.63 Mio Tons) and 25% (19,27 Mio Tons), respectively. Kalimantan Island is one of the biggest oil palm planted areas in both countries. The Indonesia-Malaysia border area in Kalimantan island shows great potential for palm oil industrial development, covering upstream and downstream industries, as supported by land suitability, agri -climate, and social environment of the community. Within the Indonesian border area, there are about 1.7 Mio Hectares of suitable land for oil palm plantations. Therefore, enhancements of cooperation in the development of oil palm between Indonesia and Malaysia become important. The collaboration along the border area will give benefit in strengthening bilateral relations between Indonesia and Malaysia, protecting natural resources, improving the security and the economy of the community, supporting growth trends of palm oil price and demand, developing oil palm plantations, and a step to achieve palm oil sustainability; which is a solution to border problems related to social, economic, cultural, environmental, and border security issues between two countries. From the economic aspect, the collaboration in oil palm development will provide benefits including equitable welfare distribution, spillover to the development of the regional economy, and expanding value chain and industrialization. The potential areas of collaboration in the development of oil palm agribusiness between Indonesia and Malaysia along border areas include oil palm plantation development, downstream industries, community development, research and development for sustainable palm oil, technologies transfer, and integrated market between the countries. The Indonesia - Malaysia collaboration in oil palm industries involving the private sector has been long established. Notably, for the one in the development of oil palm along with the border areas, PTPN III has a great potential to be involved considering its infrastructure possession in the Kalimantan areas with 13 plantations (+56,000 Ha) and 7 palm oil mills with a capacity of 395 Tons/Hours. PTPN III is a State-Owned company under the Ministry of State-Owned Enterprises (BUMN) engaged in plantation, processing (for intermediate and final products), and marketing of estate commodities including oil palm, rubber, and sugar, tea, coffee, and cocoa. Currently, PTPN III has fostered B2B cooperation with Kuala Lumpur Kepong Berhad and Sime Darby Oil Sei Mangkei Refinery.