MIFARE is the NXP Semiconductors-owned trademark of a series of chips widely used in contactless smart cards and proximity cards.

The MIFARE name covers proprietary technologies based upon various levels of the ISO/IEC 14443 Type A 13.56 MHz contactless smart card standard. According to MIFARE themselves, 10 billion of their smart card chips and 150 million of their reader modules have been sold.^[1] The technology is owned by NXP Semiconductors, which was spun off from Philips Electronics in 2006.