Paula Ann Zahn (born February 24, 1956) is an American  journalist, newscaster, news anchor, and TV host. She has been an anchor at ABC News, CBS News, Fox News, and CNN. She produced and is the host of ID's true crime documentary series On the Case with Paula Zahn.

In 1987, Zahn accepted an offer to work at ABC News, initially anchoring The Health Show, a weekend program on health and medical issues. Within a few months she was co-anchoring World News This Morning, the network's early morning newscast, and anchoring news segments on Good Morning America as well as substituting for co-host Joan Lunden.

In 1990, Zahn was offered a job at CBS News, which she took beginning on February 26, 1990, co-anchoring CBS This Morning with Harry Smith. During this time, she helped cover the 1992 Winter Olympics in Albertville, France with Tim McCarver and the 1994 Winter Olympics in Lillehammer, Norway, as well as covering the Waco siege. Both she and Smith left after changes were made at the morning show in 1996 with their last day being on June 14, 1996. Zahn then went on to work as anchor of the Saturday edition of the CBS Evening News, as well as substituting for Dan Rather during the week, and contributing reports to 48 Hours, Public Eye with Bryant Gumbel, and CBS News Sunday Morning.

In 1999, after nine years at CBS News, Zahn moved to the world of cable news, joining Fox News Channel (FNC), where she anchored Fox Report, the network's nightly newscast. Months later, she helped launch her own prime time news program, The Edge with Paula Zahn.

Zahn began her work at CNN on September 11, 2001, joining anchor Aaron Brown in the coverage of that day's terrorist attacks as her reaction to the events she witnessed. Although not scheduled to appear on a CNN program, which was still in development, she began a regular morning news shift the next day. By January, she launched her CNN morning news program, American Morning with Paula Zahn.

In 2003, during the Iraq War, Zahn moved back to prime time, hosting a two-hour program labeled Live from the Headlines which offered continuing coverage of the war and other events. By September, her show, Paula Zahn Now, premiered.

On July 24, 2007, she announced her resignation from CNN. The final broadcast of Paula Zahn Now aired August 2, 2007. On the Case with Paula Zahn premiered October 18, 2009, on the Investigation Discovery channel.