Facebook public policy director Brent Harris described creation of the board as the "beginning of a fundamental change in the way some of the most difficult content decisions on Facebook will be made."
The 20 members of the panel announced Wednesday come from various countries and include jurists, human rights activists, journalists, a Nobel peace laureate and a former Danish prime minister.
"This is a group that has a diverse set of insights, backgrounds, and beliefs but share a deep commitment to advancing human rights and freedom of expression," board director Thomas Hughes said during a phone briefing.
The board is to be expanded to 40 members. It remained unclear when the board would start hearing cases due to restrictions on gathering or traveling caused by the deadly coronavirus pandemic.
Board members have met virtually and training has started, according to Hughes.
The board was first proposed by Facebook co-founder and chief Mark Zuckerberg in 2018.