Charles Martin Kupperman[1] (born November 9, 1950) is a former United States Deputy National Security Advisor for President Donald Trump, a position he held from January to September 2019.

He also was the acting United States National Security Advisor for eight days in September 2019 between John Bolton and Robert C. O'Brien.

[15] In January 2019, he became the deputy national security advisor,[3] replacing Mira Ricardel, who had left that position in mid-November 2018.

[16][17] The Council on American Islamic Relations said that it was "appalled" by Kupperman's appointment because of the Center for Security Policy's record of anti-Islam statements.

[20] Kupperman was scheduled to testify on October 28, 2019, before three House committees handling the impeachment inquiry against Donald Trump with respect to the Trump-Ukraine scandal.

[20] Subsequently, Kupperman filed a lawsuit asking a federal judge to decide whether or not he must comply with the House subpoena or the Trump Administration's request to not testify.