Ennis del Mar (Del Mar in the film) is the fictional main character of the short story "Brokeback Mountain" by Annie Proulx and the 2005 Academy Award-winning film adaptation of the same name directed by Ang Lee. Ennis's story is depicted by his complex, sexual, and romantic relationship with Jack Twist in the American West from 1963 to 1983. In the film, he is portrayed by Heath Ledger, who was nominated for the Academy Award for Best Actor for his performance.

"Ennis del Mar" literally translates as "Island of the Sea". Ennis, a corruption of the Irish inis for island and del mar is Spanish for "of the sea".

In an interview about her work, and "Brokeback Mountain" in particular, Proulx stated Ennis Del Mar was a "confused Wyoming ranch [kid]" who finds himself in a personal sexual situation he did not foresee, nor can understand. She said both men were "beguiled by the cowboy myth," and "Ennis tries to be one but never gets beyond ranch hand work." Ennis is also the more closed-down party of his and Jack's relationship, being more reluctant to show affection towards Jack. When Jack brings up suggestions about them living together, or even just Ennis moving to Texas, which is his home state, Ennis always declines, sometimes in a very harsh way.

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.

Del Mar is Spanish for "of the ocean" or "on the ocean". It may refer to:

Jacob Benjamin "Jake" Gyllenhaal ( /ˈdʒɪlənhɔːl/ JIL-ən-hawl; born December 19, 1980) is an American actor. The son of director Stephen Gyllenhaal and screenwriter Naomi Foner, Gyllenhaal began acting at the age of ten. Following his first lead role in 1999's October Sky, he starred in the indie cult hit Donnie Darko (2001), in which he played a psychologically troubled teenager alongside his older sister, actress Maggie Gyllenhaal. In 2004 he appeared in the science-fiction film The Day After Tomorrow, portraying a student caught in a cataclysmic global cooling event. He then played against type as a frustrated Marine in Jarhead (2005). The same year his role as Jack Twist in Brokeback Mountain earned him critical acclaim and an Academy Award nomination for Best Supporting Actor. He has since played the lead roles in many notable films, including Zodiac (2007), Prince of Persia: The Sands of Time (2010) and Source Code (2011).

Gyllenhaal has promoted various political and social causes. He has appeared in Rock the Vote advertising, campaigned for the Democratic Party in the 2004 U.S. presidential election, promoted environmental causes, and campaigned on behalf of the American Civil Liberties Union.

Heath Andrew Ledger (4 April 1979 – 22 January 2008) was an Australian television and film actor. After performing roles in Australian television and film during the 1990s, Ledger left his homeland for the United States in 1998 to develop his film career. His work comprised nineteen films, including 10 Things I Hate About You (1999), The Patriot (2000), A Knight's Tale (2001), Brokeback Mountain (2005), and The Dark Knight (2008). In addition to acting, he produced and directed music videos and aspired to be a film director.

For his portrayal of Ennis Del Mar in Brokeback Mountain, Ledger won the 2005 New York Film Critics Circle Award for Best Actor and the 2006 "Best Actor" award from the Australian Film Institute and was nominated for the 2005 Academy Award for Best Actor as well as the 2006 BAFTA Award for Best Actor in a Leading Role. Posthumously he shared the 2007 Independent Spirit Robert Altman Award with the rest of the ensemble cast, the director, and the casting director for the film I'm Not There, which was inspired by the life and songs of American singer-songwriter Bob Dylan. In the film, Ledger portrayed a fictional actor named Robbie Clark, one of six characters embodying aspects of Dylan's life and persona. Ledger received numerous accolades for his critically acclaimed portrayal of the Joker in The Dark Knight, including the Academy Award for Best Supporting Actor, a Best Actor International Award at the 2008 Australian Film Institute Awards, for which he became the first actor to win an award posthumously, the 2008 Los Angeles Film Critics Association Award for Best Supporting Actor, the 2009 Golden Globe Award for Best Supporting Actor and the 2009 BAFTA Award for Best Supporting Actor.