Kim Martin Christensen (December 1952 – April 15, 2024) was an American journalist and investigative reporter at the Los Angeles Times and two time Pulitzer Prize winner.  He also worked for The Capital and The Daily Press.

In 1995, Christensen was part of a team looking into allegations that fertility doctors at UC Irvine's Center for Reproductive Health were harvesting eggs from women and transferring them into other patients without permission. At least 15 children were born after such transfers. This led to lawsuits and eventually to changes in state and federal law. Christensen's "Bell's money flowed uphill", which was published on July 26, 2010, and won the Pulitzer Prize for Public Service and the Pulitzer Prize for Investigative Reporting for The Orange County Register in 1996. Christensen shared another Pulitzer for investigations of the United States Immigration and Naturalization Service.

Kim Christensen spent more than 40 years writing for newspapers, starting with the Dayton Daily News in his hometown in Ohio and capping his career as an investigative reporter at the Los Angeles Times. He has shared two Pulitzer Prizes, at the Oregonian in 2001 and at the Orange County Register in 1996, for investigations of the U.S. Immigration and Naturalization Service and of fertility fraud at University of California, Irvine. He lives in Long Beach, California, with his wife Christina, a former newspaper and magazine editor.