The first season of the American version of the television reality program Love Island began airing on July 9, 2019, and concluded on August 7, 2019.

On August 7, 2019, having received the largest quantity of votes from the public, Elizabeth Weber and Zac Mirabelli were crowned the winners and split the $100,000 prize.

The show's first season generally received mixed reviews from critics[1] and its ratings were not as high as CBS's expectations.

At the villa, the couples must share a bed for sleeping and are permitted to talk with other Islanders at any time, allowing them to get to know everyone.

Ray Gantt & Caro Viehweg competed as a team on The Amazing Race 33,[13] prior to the suspension due to the COVID-19 pandemic and they did not return for the resumption of that season.

After receiving a text, it is revealed that at the end of the week, someone will be left single and will be "dumped" or eliminated from Love Island.

On Night 3, it is revealed to viewers that America can vote on which two women the two new Islanders, Cormac and Dylan, should go on dates with.

The men prank the women with a fake text from Love Island, which is delivered by Weston as part of his birthday.

[27] After the new women, Christen and Katrina, enter the villa, the Islanders play a game in which they must keep a card on their lips using suction.

The next morning, Weston receives a text saying there will be a re-coupling in which the men can pick which woman they want to be coupled with.

The safe couples are Alexandra and Dylan, Katrina and Weston, Elizabeth and Zac, and Kyra and Cashel.

Kyra gets a text informing the women they will be getting drinks at a location outside of the villa, leaving the men to take care of the babies.

On Day 28, Alexandra, Dylan, Zac, and Elizabeth receives a text informing each of them of their final dates.

On Day 30, at the elimination, only four couples can advance to the finale; these are Ray and Caro, Zac and Elizabeth, Dylan and Alexandra, and Emily and Weston.

While the women are gone, Ray gets a text telling the men to write a "declaration of love" they will read to their partners that night.

On February 22, 2006, it was announced an American version of Celebrity Love Island was in development at My Network TV[63][64] but the program was never produced.

[65] On August 8, 2018, it was reported CBS had acquired from ITV Studios and Motion Content Group the rights to produce an American non-celebrity version of the show with David George, Adam Sher, and David Eilenberg serving as executive producers.

[66] Simon Thomas, Mandy Morris, Ben Thursby, Richard Foster, and Chet Fenster later joined the series as executive producers in addition to the original three.

[75] Series producers chose Fiji as a location because "it 'meant something to Americans' and 'feels like a place you would want to come and fall in love'.

"[76] The villa features a two-story house in which the Islanders live; it has a communal bedroom and an outdoor kitchen downstairs.

[80][4] The second floor of the villa has a bathroom containing an infinity bathtub, dressing area, balcony, and a toilet, which the Islanders shared.

Couples could earn the privilege of spending a night at the Hideaway by winning one of the games that are regularly played in the villa during the season.

[86] On Saturday, July 27, 2019, American television channel Pop broadcast a 14-hour marathon of the first fourteen episodes of the series.

[88] On October 17, 2019, starting at 7 p.m. Pacific Daylight Time, the contestants of the first series of Love Island, including host Arielle Vandenberg and narrator Matthew Hoffman, attended a reunion party.

[89] The reunion would have been the first time the entire cast of the series was together[90] but Mallory Santic, Cormac Murphy, Marli Tyndall, Winston Hines, Kelsey Jurewicz, and Anton Morrow did not attend.

[90] Review aggregator website Rotten Tomatoes gives the first American series of Love Island 55%, holding an average rating of 5.25 out of 10 with the consensus being "Crude, rude, but without that charming British attitude, Love Island fails to make a splash across the pond—though fans may still find comfort in its cynically familiar formula".

[93] After watching the pilot, Yohana Desta of Vanity Fair said the series "was a charmer in its first episode" but noted the differences between host Arielle Vandenberg and narrator Matthew Hoffman from their British counterparts Caroline Flack and Iain Stirling, respectively, stating Vanderberg is much more of a joker than Flack and that Hoffman had not captured the "snarky energy" of Stirling.

Club called the series "pure chaotic evil" and said, "Love Island is about a bunch of hot people sitting by a pool bonding over the fact that they have nothing to do".

[95] Reviewing the first five episodes, Kathryn VanArendonk of Vulture stated "Love Island is boring, but hard to escape",[96] but Ben Travers of IndieWire opined that the contestants were bland.

[97] CBS Entertainment president Kelly Kahl told The Hollywood Reporter it was targeting a young, mostly female audience for the series.