Super Sentai is the Japanese tokusatsu programme from which Power Rangers takes it's combat footage. In South Korea, dubbed Super Sentai are broadcast under the Power Rangers name as well.
10th Anniversary (1988)
This logo was used with Choujuu Sentai Liveman, which was the tenth series at the time. Liveman would later be classed as the twelfth series, as the first two series, Himitsu Sentai Goranger and J.A.K.Q. Dengekitai, were not counted as Super Sentai series until the announcement of the ninteenth series, Ohranger. The series after Liveman, Kousoku Sentai Turboranger, also celebrated the anniversary of Sentai, as it premiered ten years after the then first series, Battle Fever J, though Turboranger didn't have an anniversary logo.
15th Anniversary (1993)
This logo was used with Gosei Sentai Dairanger, which was the fifteenth series at the time. Dairanger would later be classed as the seventeenth series, as the first two series, Himitsu Sentai Goranger and J.A.K.Q. Dengekitai, were not counted as Super Sentai series until the announcement of the nineteenth series, Ohranger.
20th Anniversary (1996)
This logo was used with Gekisou Sentai Carranger, the twentieth series. Goranger and J.A.K.Q. were included in Super Sentai with the announcement of Ohranger, Carranger's preceeding series.
25th Anniversary (2001)
This logo was used with Hyakujuu Sentai Gaoranger, the twenty-fifth series.
30th Anniversary (2006)
This logo was used with GoGo Sentai Boukenger, the thirtieth series.
35th Anniversary (2011)
This logo was used with Kaizoku Sentai Gokaiger, the thirty-fifth series.
40th Anniversary (2016)
This logo will be used with Doubutsu Sentai Zyuohger, the fortieth series.