Jesse A. McCartney is an American pop singer and Daytime Emmy-nominated actor. McCartney initially came to fame in the early 2000s, as a member of the boy band Dream Street, and subsequently branched out into a solo career, having appeared on the television series Summerland and released two music albums, Beautiful Soul and Right Where You Want Me.

McCartney, who has been dating actress Katie Cassidy for the past two and a half years, has recently ended their relationship. Jesse announced on TRL Italy that he is now officially "a single man". They broke up because of the difficulty being apart and Jesse being on tour. Cassidy sent the following message to their fansite, JKfans.

I wanted to write you to let you know how grateful Jesse and I are for having your support for so long. Unfortunately, we are no longer together as a couple, but we managed to stay close friends :) and still spend time together when we are in the same city! It just got too crazy with our busy careers, always being in different countries for work, but we still love and adore one another, always will. I just wanted to thank you again and who knows what the future holds ;) maybe we'll work it out at some point ... Thank you to all our fans and God bless! Katie

McCartney was born in Westchester, New York, USA, to Scott and Ginger McCartney. His maternal grandparents are Dick and Joyce Sarber, from Mendocino County, California. McCartney is a born-again Christian. In 1988, his family relocated to Ardsley, Westchester County, New York, where he grew up with one brother, Timothy ("Timmy") Glover Mark McCartney (born December 20, 1996) and one sister, Lea Joyce McCartney (born July 7, 1991).

In 1999, McCartney joined the American pop boy band Dream Street, and was a member till 2002. Jesse McCartney has described the experience as a good "stepping stone" for his solo career. The group earned a gold record with their debut CD, and broke up while touring with Aaron Carter. At fifteen, he began work on a solo career with a local band, featuring musicians Dillon Kondor (guitar), Peter Chema (bass), Katie Spencer (keyboards), Alex Russeku (drums), Karelilla LaGravinese (background vocals), and Sharisse Francisco (background vocals), under the management of Ginger McCartney and Sherry Goffin Kondor, who co-produced his first album, Beautiful Soul.

McCartney released his first solo EP in July of 2003. The album featured three songs: "Beautiful Soul", "Don't You" and "Why Don't You Kiss Her". In 2004, he performed a duet with Anne Hathaway, "Don't Go Breaking My Heart", which is featured on the Ella Enchanted soundtrack.

McCartney began performing in local community musicals at the age of seven, before joining the National Tour of The King and I at the age of ten along with Phil of the Future star Ricky Ullman. He later appeared with The Who's Roger Daltrey in A Christmas Carol at Madison Square Garden. From 1998 to 2001, McCartney played Adam Chandler, Jr. on the ABC soap opera All My Children, a role in which he earned a Daytime Emmy nomination. He also later starred in the short-lived series Summerland, which aired on the now-defunct The WB network for two seasons. McCartney also co-starred along with Elisabeth Harnois in an independent teenage drama feature film directed by Todd Kessler, Keith, shot during late-2005/early-2006, featuring McCartney in the title role. As of now, no official release date has been announced. He was also the voice actor for Roxas in Kingdom Hearts II. In the Summer of 2007, he appeared in an episode of Hannah Montana titled "When You Wish You Were The Star," where he played himself as Hannah Montana's boyfriend.