Lauren Michelle Jauregui Morgado (/ˈhaʊrɛɡi/; born June 27, 1996) is an American singer and songwriter. She rose to prominence as a member of the girl group Fifth Harmony, which became one of the best-selling girl groups of all time. Jauregui began experimenting with different sounds and exploring solo songwriting, collaborating on songs with Marian Hill, Steve Aoki and Halsey. She signed to Columbia Records to release her debut solo single "Expectations" in October 2018.

Jauregui independently released her debut solo extended play (EP) Prelude (2021), and its follow up, In Between (2023). She participated in the 34th edition of the competition series Dancing with the Stars in 2025.

Jauregui was born on June 27, 1996, in Miami, Florida, to Cuban parents Michael Jauregui and Clara Morgado. Her father is a plant manager, and her mother is a teacher, who moved to the United States when Fidel Castro came to power. The eldest of three siblings, Jauregui attended a co-ed Catholic school from pre-K through sixth grade. She then attended Carrollton School of the Sacred Heart, an all-girls Catholic college preparatory school in Miami, on academic scholarship. She was in the international baccalaureate program of the school, and participated in the talent show and softball team. Throughout her school years, Jauregui expressed herself through the arts, while she enjoyed "constantly creating", singing, writing, dancing, choreographing, playing piano and painting.

In 2012, at the age of 15, Jauregui auditioned for the second season of The X Factor U.S.. After four rounds of preliminary auditions, she was called back at the age of 16 for the televised audition in front of the judges. Jauregui performed "If I Ain't Got You" by Alicia Keys for her audition. Judge Antonio Reid described Jauregui's voice as "husky, round, mature" and her audition as "perfect". She advanced to the next round after getting approval from all four of the judges. During the second round of bootcamp, she was put up against country group Sister C with the song "These Arms of Mine". After being eliminated as a solo artist in the competition, Jauregui was brought back and put into a group alongside Ally Brooke, Normani, Dinah Jane, and Camila Cabello, which would later become Fifth Harmony. The group made it to the finale and finished third in the competition.

In January 2013, Fifth Harmony was signed to Simon Cowell's label Syco Music and L.A. Reid's Epic Records. Jauregui dropped out of school to work with Fifth Harmony, and later received her high school diploma through homeschooling. The group released their debut EP Better Together in October 2013. Their debut album Reflection was released in January 2015. Jauregui did not participate in promotion for the release of Reflection as her grandmother died the day of the album's release and her bandmates recommended she head to Florida. The album's third single "Worth It" peaked at number 12 on the Billboard Hot 100, their highest peak yet on the chart. The group also contributed the song "I'm in Love with a Monster" to the soundtrack of the animated film Hotel Transylvania 2 (2015). In December 2015, Fifth Harmony was honored as "Group of the Year" at the Billboard Women in Music ceremony.

Fifth Harmony's second album 7/27 was released in May 2016. "Work From Home", the album's lead single, peaked at number four on the Billboard Hot 100, and reached the top 10 in several international charts. "Work From Home" became the first song from a girl group to reach the top 10 of the Billboard Hot 100 in eight years. The group's third album, Fifth Harmony, their first as a foursome after Cabello's departure in December 2016, was released in August 2017. The album marked the first time the group was able to co-write and have agency over the creative direction of an album. In March 2018, the group announced their decision to take an indefinite hiatus to grow as individual artists and pursue solo ambitions.

After the release of the group's second album, Jauregui continued with Fifth Harmony and began exploring solo songwriting, while the other members also worked on solo projects outside the group. In December 2016, she collaborated with Marian Hill on their song "Back to Me", Jauregui's first release outside of Fifth Harmony. Jauregui said that being able to "form a genuine connection" with the duo and write for the song was an "honor", while it gave "a snippet of my vibe for the first time in collaboration with them". Samantha Gongol of Marian Hill said that the duo and Jauregui had been wanting to work together since they met at one of Marian Hill's shows over a year earlier, and they completed the song with her in a brief period she had outside her tight schedule with Fifth Harmony. Jeremy Lloyd of Marian Hill said that Jauregui told them she had written her verse about five minutes before she was going to record it, and she "nailed the rhyme scheme and did so probably quicker and more deftly than we could have done". Lloyd also complimented the harmonies Jauregui wrote, saying that she has "an amazing harmonic ear". At the end of 2016, Jauregui was voted as the sexiest woman in AfterEllen's top 100 list of the year.

In May 2017, Jauregui was voted by the public as "Celebrity of the Year" at the British LGBT Awards in recognition of promoting equality for LGBTQ. Jauregui featured on Halsey's song "Strangers", which Billboard noted as a "long-overdue bisexual milestone in mainstream music." Halsey specifically chose Jauregui, who is openly bisexual, for the track, saying: "I just love that Lauren and I are just two women who have a mainstream pop presence doing a love song for the LGBTQ community." Jauregui featured on Ty Dolla Sign's song "In Your Phone" from his album Beach House 3 (2017). The album track peaked at number 23 on the U.S. R&B/Hip-Hop Digital Song Sales chart. Jauregui also recorded "All Night" with Steve Aoki, released in November 2017, from his album Neon Future III (2018). "All Night" was Jauregui's first release as a primary songwriter and lead singer. She also produced the vocals on the track. Aoki said of collaborating with Jauregui: "She's got so many ideas ... She's very meticulous. The attention to detail Lauren has is something I don't find in many people. ... She's got those ears, the sensibility and the vision". Jauregui said that her collaborative projects outside the group are a "chance to explore myself and discover who I am as an individual artist", and an exploration working with different artists, "seeing what it is that we create together". In January 2018, it was reported that she would be signing to Columbia Records for her future solo work.