More than 20 NGOs signed the statement sent to media for release 3 May.
"We need financial institutions like the Asian Development Bank to immediately stop lending money for coal, gas and oil projects," Baclagon said.
The ADB hosts its annual meeting virtually this week with the theme "Collaboration for Resilient and Green Recovery".
The groups said the ADB has lent $4.7 billion to gas projects in Asia since December 2015, when about 200 nations signed the Paris Agreement.
The ADB is reviewing its energy policy, which was last updated in 2009, Yongping Zhai, chief of the ADB's energy sector group said in an emailed response to Reuters' questions about the latest call from NGOs.
A draft new policy will be posted for public discussion by June, Zhai said.
The ADB has "invested about $25 billion in the energy sector during 2015-2020," with 45% of that directed to renewable energy and energy efficiency and another 35 per cent to network upgrades to integrate more renewable energy, he said.
The bank supports natural gas projects that provide community access to cleaner cooking and heating fuels, Zhai said, adding the "management agreed with (an) independent evaluation that its energy policy is no longer adequately aligned with the global consensus on climate change."