KTLA, virtual channel 5, is a television station in Los Angeles, California, USA. Owned by the Tribune Company, KTLA is an affiliate of The CW Television Network. KTLA's studios are on Sunset Boulevard in Hollywood, and its transmitter is located atop Mount Wilson. The station's signal covers the Southern California region and KTLA is also available as a regional superstation via cable and satellite in the United States and Canada.

KTLA was the first commercially licensed television station in the western United States, having begun operations in 1947.

The station's digital channel is multiplexed:

KTLA shut down its analog signal, on June 12, 2009 at 10:45 p.m. during its evening 60-minute newscast KTLA Prime News as part of the DTV transition in the United States. Veteran newsman Stan Chambers, who was hired by KTLA almost a year after its launch in 1947 and remained there for more than six decades, was given the honor of "throwing the switch" to digital at its Mount Wilson transmitter site. He pulled up a ceremonial mock switch from the analog to digital position, signaling the engineers to shut down the analog signal. Covering the on-air event for KTLA was reporter Jaime Chambers, Stan's grandson.

Keith Theodore Olbermann ( /ˈoʊlbərmən/; born January 27, 1959) is an American political commentator and writer. Most recently, he was the chief news officer of the Current TV network and the host of the Current TV weeknight political commentary program, Countdown with Keith Olbermann, until March 30, 2012, a program he hosted with the same title and a similar format on MSNBC from March 2003 to January 2011.

During his time at MSNBC, Olbermann established a niche in cable news commentary, gaining note for his pointed criticism of mainly right-leaning politicians and public figures such as Fox News Channel commentator Bill O'Reilly,President George W. Bush and 2008 Republican presidential nominee, John McCain. Though he has been described as a "liberal", he has resisted being labelled politically, stating "I'm not a liberal. I'm an American".

Olbermann spent the first twenty years of his career in sports journalism. He was a sports correspondent for CNN and for local TV and radio stations in the 1980s, winning the Best Sportscaster award from the California Associated Press three times. He co-hosted ESPN's SportsCenter from 1992 to 1997. From 1998 to 2001, he was a producer and anchor for Fox Sports Net and a host of Major League Baseball on Fox.

Mark Kriski is a Canadian born in Nova Scotia of Polish descent. He served as a DJ on Victoria, British Columbia's Q-100 FM, and Montreal's 980 AM, known as CKGM, then later as weatherman on Canada's The Weather Network in the late 1980s. Kriski now works at KTLA in Los Angeles.

Mark Kriski has been a fixture at KTLA for 2 decades. For years he was seen on the "KTLA Morning News" five hours a day, from 5am-10am Monday through Friday; in late October 2010 his shift became 7a-10a. Kriski has won 8 Emmy Awards and one Associated Press Radio-Television Award. The Los Angeles Times named Kriski the Funniest Weatherman in Los Angeles; he also earned 3 Golden Mike Awards for Best Weather Segment from the Radio & Television News Association. In November 2010, Mark contracted viral Pneumonia and was off the air for two months because of sick leave.

Kriski was married to Samantha Lewis, owner of Digital Playground, from 2004 to 2009. On May 18, 2011, he announced his engagement to KTLA colleague Jennifer Gould ; they were married September 24, 2011.

Sam Rubin is an American journalist who serves as the entertainment reporter for the KTLA Morning News and as a correspondent for ReelzChannel production Hollywood Dailies. He hosts the Emmy-nominated Live From the Academy Awards and the celebrity talk-show Hollywood Uncensored with Sam Rubin, also on ReelzChannel. Rubin has reported on the entertainment industry for over twenty years and has interviewed many Hollywood stars, including Tom Hanks, Mel Gibson, Jeff Bridges, Halle Berry, and Larry King. He is also the co-author of two biographies, one on the former first lady Jacqueline Onassis and another on actress Mia Farrow.

Rubin has received a Golden Mike award for best entertainment reporter and an Associated Press Television and Radio award as part of KTLA news team's morning show. He currently lives in Los Angeles with his wife and four children. Rubin is a graduate of Occidental College.

Mario Armando Lavandeira, Jr. (born March 23, 1978), better known as Perez Hilton (a play on "Paris Hilton"), is an American blogger and television personality. His blog, Perezhilton.com (formerly PageSixSixSix.com), is known for posts covering gossip items about celebrities. He is also known for posting tabloid photographs over which he has added his own captions or "doodles." His blog has garnered negative attention for its attitude, its former "outing" of alleged closeted celebrities and its role in the increasing coverage of celebrities in all forms of media.

Hilton was born in Miami, Florida to parents from Cuba. He graduated in 1996 from Miami's Belen Jesuit Preparatory School and received his BFA in drama from New York University. In 2002, Hilton moved to Los Angeles, where he currently resides.

After graduation from New York University in 2000, and before beginning his blogging career, Hilton attempted a career as an actor. He briefly worked as a media relations assistant for LGBT rights organization GLAAD, was a freelance writer for gay publications, worked as a receptionist for NYC gay events club Urban Outings, and was briefly the managing editor of Instinct, a gay men's magazine. He says he started blogging "because it seemed easy."