According to a report in US Weekly, the couple has ended their relationship of more than two years.
A source confirmed to Us Weekly: 'They had been on and off for a while. They tried to work it out but realised their relationship ran its course.'
Tisdale, 26, began dating music video director Speer, 29, in the spring of 2009, one month after she broke up with V Factory band member Jared Murillo.
Prior to their split, Speer directed five of Tisdale's music videos, including He Said She Said, Not Like That, Suddenly, It's Alright, It's OK and Crank It Up.
Tisdale - who shot to fame as part of Disney's High School Musical franchise - recently appeared in her own spinoff, Sharpay's Fabulous Adventure.