SMK Corporation is a Japanese electronics manufacturer that previously produced keyboards and switches.
SMK was founded in 1925 by 池田平四郎 (Ikeda Heishirō) as 池田無線電機製作所 (Ikeda Radio Electric Works). In 1929, the business was reorganised and renamed as Showa Radio Industry Co., Ltd. (昭和無線工業株式会社: Showa Musen Kogyo Kabushikigaisha). In 1985, the name changed again to SMK Corporation, SMK株式会社. In patents, this can be seen spelt out phonetically as エスエムケイ株式会社 (Esuemukei Kabushikigaisha).