January 28 – Lieutenant Nobu Shirase and 27 others reach a point at the South Pole 80 degrees 5' south and 156 degrees 37'. They name it Yamato Sekihara.
March unknown date – Yanmar has founded, as predecessor name was Yamaoka Engineer Works.[page needed]
May 15 – 1912 Japanese general election: The result was a victory for the Rikken Seiyūkai party, which won 209 of the 381 seats. The 381 members of the House of Representatives were elected in 51 multi-member constituencies based on prefectures and cities. Voting was restricted to men aged over 25 who paid at least 10 yen a year in direct taxation.[4]