Garth Ennis (born 16 January 1970) is a Northern Irish comics writer, best known for the Vertigo series Preacher with artist Steve Dillon and his successful nine-year run on Marvel Comics' Punisher franchise. He has collaborated with artists such as Steve Dillon and Glenn Fabry on Preacher, John McCrea on Hitman, and Carlos Ezquerra on both Preacher and Hitman.

Ennis began his comic-writing career in 1989 with the series Troubled Souls. Appearing in the short-lived but critically acclaimed British anthology Crisis and illustrated by McCrea, it told the story of a young, apolitical Protestant man caught up by fate in the violence of the Irish 'Troubles'. It spawned a sequel, For a Few Troubles More, a broad Belfast-based comedy featuring two supporting characters from Troubled Souls, Dougie and Ivor, who would later get their own American comics series, Dicks, from Caliber in 1997, and several follow-ups from Avatar. Ennis was later critical of his writing debut, which he describes as "the kind of thing that was doing well at the time. (...) With hindsight, what Troubled Souls really represented was naked ambition. It was a direct attempt to get published. And that was the road that seemed most likely to lead me to success".

Ennis (Irish: Inis, meaning "island") is the county town of County Clare in Ireland. Situated on the River Fergus, it lies north of Limerick and south of Galway. Its name is a shortening of the original Inis Cluain Ramh Fhada ("island of the long rowing meadow").

The town is 19 km (12 mi) from Shannon and Shannon Airport. Geographically located near the mouth of the Fergus estuary, it is now a gateway to the West of Clare via the N85 Western relief road for people travelling from the Limerick and East Clare regions.

The 2006 census indicates that Ennis had a population of 24,253 making it the largest town in Munster and the sixth largest town in Ireland. It is the 11th largest urban centre in the country.

In 2005 Ennis won the Irish Tidy Towns Competition. The town has maintained this high status over the years coming 2nd in 2008, an improvement on the previous year.