Sarah Asher Tua Geronimo (/hɛˈrɒnɪmoʊ/ herr-ON-ih-moh; born July 25, 1988) is a Filipino singer and actress. Geronimo rose to prominence after winning the television talent show Star for a Night (2002). In 2003, she was signed to Viva Records, and released her debut studio album Popstar: A Dream Come True, supported by the singles "Forever's Not Enough" and "Sa Iyo".

Geronimo reinvented her image and style with Becoming (2006) and Taking Flight (2007), gaining praise for her growth and maturity. She recorded covers on Music and Me (2009) and One Heart (2011), the latter of which also included original material and was supported by the singles "Sino Nga Ba Siya" and "Kung Siya ang Mahal". Geronimo produced her tenth studio album Expressions (2013), which featured the lead single "Ikot-Ikot". Her twelfth studio album, The Great Unknown (2015), contained the lead single "Tala", which sparked a trend between 2019 and 2020. In 2025, she launched her independent record label, G Music.

Geronimo made her acting debut with supporting roles in the films Filipinas and Captain Barbell (both 2003) and followed this with a co-starring role in Lastikman: Unang Banat (2004). She played leading roles in the film A Very Special Love (2008) and its sequels You Changed My Life (2009) and It Takes a Man and a Woman (2013), winning the Box Office Entertainment Awards for Box Office Queen for all three and the Golden Screen Award for Best Actress for the latter. She also starred in title role in Miss Granny (2018), for which she won a Star Award for Best Actress. She also starred in the television series Sarah the Teen Princess (2004), Bituing Walang Ningning (2006), Pangarap na Bituin (2007), and 1DOL (2010). Geronimo expanded her career into reality television talent shows as a host of the talent competition show Little Big Star (2005) and as a coach on The Voice of the Philippines (2013) and its spin-offs The Voice Kids (2014) and The Voice Teens (2017).

Geronimo's accolades include a Billboard Women in Music Award, an MTV Europe Music Award, a World Music Award, an Mnet Asian Music Award, 16 Awit Awards, and 28 Myx Music Awards. Tatler magazine named her one of the most influential people in Asia in 2021, and Billboard Philippines named her as the Woman of the Year in 2024.

Sarah Asher Tua Geronimo, the third of four siblings, was born on July 25, 1988, in Santa Cruz, Manila. Her father, Delfin, was a lineman for telecommunications company PLDT, while her mother, Divina (née Tua), was educated at University of Santo Tomas, where she majored in economics. Her family struggled financially and frequently moved houses; she put up a salon business to help make her family's ends meet.

Geronimo shared a close relationship with her father, who served as her first vocal coach. She learned about the childhood of singer Regine Velasquez, who was immersed neck-deep in the sea during her vocal training to strengthen her windpipe. Her father also submerged her in a water drum in imitation of the practice. At age two, she began singing and had performed in front of a crowd; her singing interest led her to join several amateur singing competitions. During her first competition, she performed Shirley Bassey's "The Greatest Performance of My Life". According to her mother, she began her career at age four as a cast member in the television series Penpen de Sarapen, Ang TV, and NEXT. In 1995, Geronimo appeared in the film Sarah... Ang Munting Prinsesa as a background actor, playing a friend of Camille Prats's character. That same year, she appeared at the World Youth Day as a musical performer and competed in 'Sang Linggo nAPO Sila's "Princess Asia".

Geronimo was a junior at the University of Santo Tomas Education High School when she joined the reality television singing contest Star for a Night, based on the British talent show of the same name. Looking back, she recalled that she had auditioned for the contest three times, and was resentful after her second attempt. She won the competition on March 1, 2003, at the PhilSports Arena in Pasig City, performing a cover of Celine Dion's "To Love You More". After her win, she was signed to a record deal with Viva Records. She stated that her family was her inspiration despite the challenges they have been through. Geronimo then continued studying through homeschooling at the Angelicum College, where she received her high-school diploma in 2007.

After Star for a Night, Geronimo released her debut studio album Popstar: A Dream Come True. It included the singles "Sa Iyo", written by Jun Murillo, "Forever's Not Enough", written by Vehnee Saturno, and her rendition of Dion's "To Love You More". The album has sold over 300,000 units in the Philippines, and was certified 5× platinum. In support of the album, she headlined a concert in October at the Music Museum in Greenhills, San Juan.