Tel-Tel Mahjong (ＴＥＬ・ＴＥＬまあじゃん) is a Sega Mega Drive Mahjong video game that was released exclusively in Japan in 1990.

Part of the Tel-Tel series that included Tel-Tel Stadium, it was one of the few games that used the Mega Modem, allowing for two-player games via the Sega Net Work System.

Up to three players could play the "host" player in addition to play against computer opponents.

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