David Derman (April 9, 1933 – September 4, 2002 in Buenos Aires, Argentina) was an Argentine tango dancer who kept a record of the women with whom he danced in the milongas in a checkbook register.
He danced with approximately 7,600 women.
The card he would give to each woman he danced with would have the following note:
"You are now registered in my heart forever.
You will not be for me just a name or a number.
Please accept this souvenir from somebody who is deeply grateful for the dance we shared, a few minutes where we escaped from the world to enter into the kingdom of emotion and happiness that is tango.
Thank you for dancing with me."
He danced as a salon dancer with Sally Potter in her movie The Tango Lesson.
He died in front of El Beso before going to milonga.