He might be the tallest 9/11 truther ever.

Shaquille O’Neal’s Web site posted an entry about a possible “inside job” in the World Trade Center terror attacks and asked ominously, “Are we getting the truth?”

The post includes the slow-motion viral video of the second jet flying into the south tower on Sept. 11, 2001.

“Supposedly the materials that the buildings are made of wouldn’t allow a plane to slice through it as cleanly as Flight 175 did,” the site ­contends.

The 7-foot-1 former NBA star also linked the post to his Facebook page and asked: “This might make you think twice . . . what do you think?”