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Warren Blatt (born 1962) is an American genealogist and computer engineer who is the Managing Director of JewishGen, an online source for researching Jewish roots.^[1] He is the author/coauthor of a number of books including Getting Started in Jewish Genealogy (with Gary Mokotoff).

Blatt received the Lifetime Achievement Award of the International Association of Jewish Genealogical Societies in 2004.^[2]

• Blatt, Warren (1996). Resources for Jewish Genealogy in the Boston Area. Boston, MA: Jewish Genealogical Society of Greater Boston. ISBN 978-0-9652151-0-7. OCLC 34929772.
• Blatt, Warren (1996). FAQ: Frequently Asked Questions About Jewish Genealogy. Teaneck, NJ: Avotaynu. ISBN 978-1-886223-04-2. OCLC 36001080.
• Mokotoff, Gary; Blatt, Warren (1999). Getting Started in Jewish Genealogy. Bergenfield, New Jersey: Avotaynu. ISBN 978-1-886223-10-3. OCLC 42690064.
• Blatt, Warren (2003). Polish-Jewish Genealogical Research. Hobart, Indiana: Repeat Performance. OCLC 64391396.
• Blatt, Warren; Tobias, Michael (2003). Introduction to JewishGen Databases. Hobart, Indiana: Repeat Performance. OCLC 64391426.