Founded in 1948, the Electronic Industries Association of Japan (EIAJ) was one of two Japanese electronics trade organizations that were merged into the Japan Electronics and Information Technology Industries Association (JEITA).

Prior to the merger, EIAJ created a number of electronics industry standards that have had some use outside Japan, including:

• The EIAJ connectors used for DC power (EIAJ RC-5320A, EIAJ RC-5321, and EIAJ RC-5322
• The D-Terminal connector (RC-5237), used instead of three RCA plugs for component video connections.
• The TOSLINK (EIAJ Optical, RC-5720C) optical S/PDIF audio connector.
• The EIAJ-1 videotape format, the first standardized format for industrial/non-broadcast video tape recording, released in 1969.

Another standard is the multi-channel TV sound system used with the NTSC-J analog TV system. It is often referred to simply as EIAJ, or sometimes as FM-FM audio.