Jelani Cobb

William Jelani Cobb was born in Queens, New York, on August 21, 1969, the youngest of four children. Both of Cobb's parents had migrated from the American South, where they did not have access to high-quality schools. As a result, they were determined to give reading and learning important places in their family life.

Cobb counted being taught to write at an early age by his father, Willie Lee Cobb—an electrician with a third-grade education—among his earliest memories. On his website, Cobb described his father's "huge hand engulfing mine as he showed me how to scrawl the alphabet." His father was also a Catholic who raised him in the faith; his birth namesake was St. Anthony.

Cobb attended Jamaica High School followed by Howard University in Washington, D.C., where it took him seven years to complete his undergraduate degree because he did not consistently have the funds to pay tuition. At Rutgers University, he received a PhD in American history in May 2003 under the supervision of David Levering Lewis.

Cobb has received fellowships from the Fulbright and Ford Foundations.

While studying at Howard, Cobb began his professional writing career, first publishing at a short-lived periodical called One. In time, he began contributing to the Washington City Paper. His first national outlet was YSB magazine, part of the Black Entertainment Television, Inc. media empire, beginning in 1993. He also became more politically active during this time, and was involved with an organization that took over Howard's administration building in 1989. It was around this time that Cobb, seeking to connect more with African tradition, decided to add "Jelani"—a word meaning "powerful"—to his name.

Cobb specializes in post-Civil War African-American history, 20th-century American politics, and the history of the Cold War. He served as a delegate and historian for the 5th Congressional District of Georgia at the 2008 Democratic National Convention. He previously taught at Rutgers and Spelman College.

In 2018, Cobb appeared as himself in the final episode of Marvel's Luke Cage season 2.

In an August 2022 interview with Politico Magazine, Cobb, discussing his goals as dean of the Columbia Journalism School (CJS), said he wanted to help "make the [journalism] field itself more democratic. I don’t have any illusions about how complicated that undertaking will be."

In March 2025, Cobb met with students following the detention of Mahmoud Khalil, offering a frank assessment of the dangers journalists — especially international students — could face: "I would do everything in my power to defend our journalists and their right to report but... none of us had the capacity to stop DHS from jeopardizing their safety. It was important to speak directly to the threats journalists were likely to confront in reporting on the situation on campus not to dissuade students but to give them a honest rendering of the risks it entailed."

In 2025, he was named Humanist of the Year by the American Humanist Association.