Luna E-6 No.6, sometimes identified by NASA as Luna 1964A, was a Soviet spacecraft which was lost in a launch failure in 1964. It was a 1,422-kilogram (3,135 lb) Luna E-6 spacecraft, the fourth of twelve to be launched, It was intended to be the first spacecraft to perform a soft landing on the Moon, a goal which would eventually be accomplished by the final E-6 spacecraft, Luna 9.
Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets.