Aljur Mikael Guiang Abrenica (born March 24, 1990) is a Filipino actor and singer. He appeared on the fourth season of StarStruck.
His father, Alfonso Abrenica Jr., was a musician, and his mother, Amor Guiang, was a member of a band. Abrenica attended Don Bosco Academy, Pampanga in high school and has said that he aspired to become a pilot by pursuing aeronautics. Abrenica is the older brother of Vin Abrenica.
In 2006, he joined reality-based talent search show, StarStruck, and won the "Ultimate Hunk" title. As of September 2007, Abrenica was signed with Regal Films. Abrenica played Cervano/Zaido in '. He has also appeared in Dyesebel and Boys Nxt Door, Luna Mystika and SOP Rules. He is also named the "Next Big Male Star" by Yes! Magazine.
Throughout his career in GMA, he was part of the lead cast of All My Life, The Last Prince and Machete, among others. He also starred in the film Nandito Ako...Nagmamahal Sa'Yo, produced by Regal Films. Abrenica joined in a GMA Christmas Reality show, '.
In July 2014, Abrenica filed for a petition before the court to be released from GMA Network, stating that the direction of his career does not align with original plans. Despite this, he was still given lead roles in Kambal Sirena and Once Again. He was let go of his home network when his contract expired in March 2017. His last appearances were off-contract guest roles on shows like Bubble Gang.
In August 2017, Abrenica signed an exclusive contract with ABS-CBN. He got his first lead role in the network with Asintado.
Abrenica has a family owned resort called, Patio Alfonso Resort located in Batangas.
Abrenica is a practicing Born-again Christian.
Abrenica began dating actress Kylie Padilla from 2011 to 2014, before rekindling their relationship in 2016. The two became engaged in January 2017, Padilla gave birth to her and Abrenica's first child, a son named Alas Joaquin, on August 4, 2017. Abrenica and Padilla married in December 2018. Padilla gave birth to Abrenica's second son, Axl Romeo, on December 9, 2019. The couple separated in April 2021. Padilla's father Robin Padilla claimed the separation was due to Abrenica's infidelity, while Abrenica claimed that Padilla "cheated first" and that he "gave up on [her]." Abrenica later admitted in April 2023 and confirmed their marriage failed because he was unfaithful to Padilla, and that they are currently co-parenting their children.
Abrenica currently in a relationship with actress AJ Raval since July 2022, which they publicly revealed in February 2023. Both Abrenica and Padilla denied accusations that Raval was the third party that led to their breakup. On November 12, 2025, during an interview on Fast Talk with Boy Abunda, Raval revealed that she and Abrenica share three kids together, Alkina, Aljur Junior, and Abraham. Abrenica and Raval maintain a good relationship with Padilla, and Abrenica's five children remain close together.
Abrenica with his legal counsel Atty. Topacio filed a Judicial Confirmation of Rescission of Contract against GMA Network on July 14, 2014, in Quezon City Hall of Justice. He cited artistic differences as the reason for filing the termination of his contract which would expire in 2017. On July 28, 2014, GMA Network received the complaint, saying it was unfortunate because they invested on Abrenica by giving him primetime shows.
The network continued to give Abrenica programs such as The Half Sisters, Dangwa and Once Again. In 2016, he apologized to GMA Network publicly, confirming that his legal case with them was already settled. His contract with GMA Network expired in March 2017, then he moved to ABS-CBN in August of the same year.