B1A4 stands for “Be the One All for One”
B1A4 clarified the meaning of their group name.
In the episode of SBS TV’s Challenge! 1000 Songs that aired on February 24, B1A4 made a guest appearance and gave a short interview.
Host Lee Hui Jae asked if B1A4 had a meaning, and B1A4 said, “It stands for ‘Be the One All for One.’ It means we’ll try our best as everyone wishes.”
B1A4 also said they had recently been selected as the most promising K-pop star of 2012 by 270,000 people from all over the world. Lee asked Gongchan, “Gongchan seems like he’s never heard of this,” and Gongchan said, “Yes, I didn’t know about that.”
In the episode, Noh Sa Yeon, Kim Jin Ah, Kim Su Keun, Ahn Yeon Hong, Lee Yong, Lee Hye Ri, Park Jun Hyung, Yoon Sung Han, and B1A4(Sandeul, Jinyoung, Gongchan, and Shinwoo) made a guest appearance.