Eric Flint is an author of alternate history and science fiction, and humorous fantasy adventures, in addition to being an editor and e-publisher.

After winning the 1993 Writers of the Future contest, Eric published his first novel in 1997 and moved to full time writing in 1999.

Shortly afterwards, he became the first librarian of the Baen Free Library and a prominent anti-copy protection activist, which stance he's continued. Additionally, he has been editing the works of several classic SF authors, repackaging their short stories into collections and fix-up novels. The resulting story collections have been commercially successful and have succeeded in returning out-of-print authors to print.

In 2004, faced with a persistent drain on his time by fan-fiction authors seeking comment on the four-years-old 1632 Tech Manual web forum focused on his 1632 series, he suggested to Jim Baen the experimental serialized fan-fiction e-zine The Grantville Gazette which also found commercial success. Four of the Gazette magazine editions were collated into anthology formats, bought by Jim Baen and brought out in either hardcover or paperback or both formats. Subsequently, Flint became editor of the new Jim Baen's Universe science-fiction e-zine while concurrently remaining a creative writer bringing out three to five titles per year. After the death of Jim Baen due to a stroke and after completing the contract for the tenth Grantville Gazette, Flint founded a new website "grantvillegazette.com" which is not only continuing to bring out The Grantville Gazettes, but increasing the publishing rate from four per year to bimonthly while paying better than standard magazine pay rates and is modeled on the JBU e-zine.

Eric's own writing includes a number of popular series written solo or in collaboration with other authors.

The Belisarius Series written in collaboration with David Drake began with An Oblique Approach in 1998, and is an epic series involving eugenics programs, time travel, and alternate timeines.

The Assiti Shards series includes Eric's popular 1632 and its sequels and spin-offs, telling the story of the inhabitants of a small town in the USA who find themselves transported back to Central Germany in the late spring of 1631 with no way back.

Eric has also contributed to the Heirs of Alexandria series with Dave Freer and Mercedes Lackey, the Rats Bats and Vats series, also with Dave Freer, and has written stories for David Weber's Honor Harrington universe.