Sigi Ziering (March 20, 1928 – November 12, 2000) was a German-born American business executive, scientist, playwright, and philanthropist.

A Holocaust survivor, he immigrated to the United States with his family, earned a doctorate in theoretical physics in 1958, and worked for a time as an industrial physicist.

In 1973 he became president of the Diagnostic Products Corporation, a tiny startup company that was developing advanced tests used for medical diagnosis.

Indeed, Count Bernadotte of Sweden had negotiated with Himmler to rescue a few thousand Jews for a few million dollars.

In 1961, he was the founder and President of Space Sciences, Inc., a government contract research firm based in Waltham, Massachusetts.

[1][2][6] In 1973, Ziering learned of the work of a chemist, Robert Ban, who had developed radioimmunoassay techniques for detecting very low levels of drugs, hormones, etc.

[9] He also served on the board of trustees of the American Jewish University in Bel Air and as co-chair of the Los Angeles section of the United States Holocaust Memorial Museum in Washington, D.C.[1][3][10] Ziering wrote a play entitled The Judgment of Herbert Bierhoff that was first performed in September 1999.

It is based on the actions of Herbert Bierhoff, a historical figure and German Jew who poisoned his daughter when he heard that she would be deported by the Nazis.

In the play, as she lies dying she asks her late husband's friend Shimon to ensure judges see that Herbert's action was merciful in light of the circumstances.

[18] In 2007, Marilyn Ziering endowed the Sigi and Marilyn Ziering National Center for Newborn Screening at the Sheba Medical Center in Tel HaShomer, Ramat Gan, Tel Aviv, Israel, helping screen Israeli-born children from early signs of mental retardation.

[9][19] In February 2013, she also established the US$1 million Marilyn and Sigi Ziering Endowment for the Arts at Shalem College in Jerusalem, Israel.

[21] The United States Holocaust Memorial Museum has preserved a 12-page letter Sigi Ziering wrote to his father from Sweden on June 24, 1945, as well as a testimony given to the USC Shoah Foundation Institute for Visual History and Education on February 28, 1999, both describing his ordeal at the hands of the Nazis.