The Kota Kinabalu Green City Action Plan (KK GCAP) is a step toward attaining Kota Kinabalu’s vision of becoming a “nature resort city—clean, green, and livable by 2020” using integrated and comprehensive development approaches. The Asian Development Bank (ADB) is spearheading the development of Green City Action Plans (GCAP) in the Brunei Darussalam–Indonesia–Malaysia–Philippines East ASEAN Growth Area (BIMP-EAGA) region. In line with the objectives of the BIMP-EAGA Vision 2025, Kota Kinabalu was selected as the first pilot city from Malaysia in the BIMP-EAGA region. The KK GCAP provides a comprehensive assessment of urban issues, climate change vulnerability, and impacts of climate change on eight selected urban sectors, namely land use and development, water supply, sewerage and stormwater drainage, transport, solid waste, street lighting, energy, and buildings.