Birdsongs of the Mesozoic is a musical group founded in Boston, Massachusetts in 1980.

The music of Birdsongs of the Mesozoic is almost entirely instrumental, and incorporates many different musical elements; critic Rick Anderson writes, "Very few bands have ever managed to straddle the worlds of modern classical music and rock as successfully as this one did." In his liner notes for their Beat of the Mesozoic EP, Boston rock critic Eric Van dubbed them "the world's hardest-rocking chamber music quartet." Another memorable description came from Jim Sullivan of the Boston Globe: "classical-punk-jazz-car-wreck music."

- Faultline
- Pyroclastics
- Dancing on A'A by Birdsongs
- Petrophonics
- The Iridium Controversy