Strictly Leakage is a mixtape by American hip hop group Atmosphere.

Jordan Selbo of City Pages gave Strictly Leakage an unfavorable review, saying, "[the] once-bright style Atmosphere became famous for is so established and well-tread that it has now become the status quo they once rebelled so infectiously against.

"[2] Writing for Impose, Blake Gillepsie wrote that "as much as Atmosphere rewind to simpler times with Strictly Leakage, Slug has a new writing approach, that of a wise elder that alienates him from his predominantly young audience.

"[5] On January 4, 2008, Strictly Leakage was listed by Wired as the "Best Free Download of the Week".

[6] On December 19, 2008, it was ranked at number 9 on NPR's "10 Best Mixtapes of the Year" list.