Ari Melber (born 1980) is an American journalist.
He is currently co-host of the afternoon MSNBC talk show The Cycle. He also appears as an analyst on other MSNBC and CNBC programs, writes a blog about politics and law for MSNBC, and serves as a correspondent for The Nation. His writing has focused on politics, organizing, civil rights, legal issues in national security, and technology issues, and has appeared in The Atlantic, Reuters and Politico. Melber wrote a report about Organizing for America and contributed to several books.