Annals of the Twenty-Ninth Century: or, The Autobiography of the Tenth President of the World-Republic is a science fiction novel written by Andrew Blair, and published anonymously in 1874.

[1] Blair's work is one of a group of early science fiction novels that are now little known, but were influential in their own time—group that includes Edward Maitland's By and By (1873), Percy Greg's Across the Zodiac (1880), and John Jacob Astor IV's A Journey in Other Worlds (1894).

[2][3] Blair tells an extravagant tale of a future age in which the peoples of the Earth have been united in a Christian "Mundo-Lunar Republic", and other planets in the solar system have been reached and their native inhabitants encountered.

"[4] In the view of another, Blair portrays "the union of science and religion...under the sign of a positivist Deism mixed up with various utopian socialisms, and progressing from one technological wonder to another.

"[5] The modern U.S. Navy trains dolphins; Blair foresees much more: ...a levy of 40,000 naturalists were engaged for years in forming a hundred different zoological armies.