Sandaime J Soul Brothers (Japanese: 三代目, Sandaime; "Third Generation"), formerly simply J Soul Brothers and stylized as Sandaime J Soul Brothers from Exile Tribe, are a J-pop vocal and dance group formed by Exile ex-leader and producer Hiroyuki Igarashi in Japan in 1991. Sandaime J Soul Brothers are managed by Hiroyuki's talent agency LDH, and are a part of the supergroup, Exile Tribe. Reformed exclusively by Exile's Vocal Battle Audition in 2010, Sandaime J Soul Brothers released their first single "Best Friend's Girl" in November 2010, which peaked at number three on the Oricon Singles Chart. Their self-titled debut album J Soul Brothers, released in 2011, also peaked at number three. In 2013, they achieved their first number-one record with their third album Miracle.
Sandaime J Soul Brothers were propelled to commercial and critical success following the release of their 2014 single "R.Y.U.S.E.I.", which won the Japan Record Award, the highest honor at the 56th Japan Record Awards. The group's fifth studio album Planet Seven was the second best-selling Japanese album and the third best-selling Asian album of 2015, selling a total of 871,000 physical copies in Japan alone. The album would later attain a Million certification by the RIAJ for having over one million physical copies sold. Additionally, Recochoku revealed the group as the best selling artist of the year with R.Y.U.S.E.I reported as the best selling song for both Recochoku and Billboard year end charts.
By December 2019, Sandaime J Soul Brothers had sold a total of more than 11.15 million records including over 7.25 million singles sales in Japan alone since their debut in late 2010. The group was reported to have earned an estimated total gross of $63.1 million (¥6.85 billion) in 2015 with a total of $76 million (¥8.25 billion) and $53.6 million (¥5.82 billion) earned in the years of 2016 and 2018 respectively.