Mandisa Lateefah Thomas is the founder and president of Black Nonbelievers Inc. She has spoken at secular conferences and events, and has promoted the group's agenda in media outlets.

[1][2][3][4][5] At the age of twenty-one, Thomas moved with her husband to Atlanta, where cultural factors made it difficult to lead a secular life.

[13] Thomas has made interview appearances in media outlets including CBS News,[14] WABE FM 90.1's Closer Look,[7], NPR's Code Switch podcast,[2] and the Freedom From Religion Foundation's Freethought Radio program.

[19][3] Its goals include eliminating stigma, increasing visibility, and providing support and networking opportunities around non-belief in the African-American community.

It has been an honor to serve as a member of this organization’s board and to collaborate so closely with these amazing activists — and friends — who work so tirelessly to advance the cause of atheism in America.”[25] In 2018, the Unitarian Universalist Humanist Association named Thomas its Person of the Year.