Lori Greiner (born December 9, 1969) is an American inventor, entrepreneur, and television personality. She is best known as a cast member of the reality TV show Shark Tank and has been called "one of the most prolific inventors of our time". Also known as "The Queen of QVC" and the “Warm Blooded Shark”. She has also appeared on Shark Tank spin-off, Beyond the Tank. Since 1998, she has appeared on the QVC program Clever & Unique Creations Show. She is also president and founder of the Chicago company For Your Ease Only, Inc., which she established in 1996 and which does product development and marketing. She has invented more than 600 products and helps aspiring entrepreneurs launch theirs. She holds 120 U.S. and foreign patents.
Greiner grew up on the Near North Side, Chicago, the second daughter of a real estate developer father and a psychologist mother. Her parents divorced when she was nine years old. She majored in communications, focusing on journalism, television, and film at Loyola University Chicago, and worked for the Chicago Tribune while in college. She was briefly a playwright and also designed and sold her own jewelry on the side.