"Just Say So" is the lead single released from Irish singer-songwriter Brian McFadden's third studio album, Wall of Soundz.

The single was released on 9 April 2010, and features American singer-songwriter, Kevin Rudolf.

The video for the song was shot in The Ivy Nightclub in Sydney, Australia in March 2010.

Access All Areas stated "Just Say So is a ridiculously catchy electro-pop track with heavy auto tune and dance beats.

"[3] On 25 April 2010, "Just Say So" debuted at number one on the ARIA Singles Chart and stayed at that position for three weeks.