Astronomy

• Mars. I. Atmosphere, The Atlantic Monthly Vol.75 (June 1895): 594-603.
• Mars. II. The Water Problem, The Atlantic Monthly Vol. 75 (June 1895): 749-758.
• Mars. III. Canals, The Atlantic Monthly Vol. 76 (July 1895): 106-119.
• Mars. IV. Oases, The Atlantic Monthly Vol. 76 (August 1895): 223-235.
• Mars (1895; 2nd ed., 1896)
• New observations of the planet Mercury (1897) OCLC:13307357^{all editions}(external scan)
• Maps of the planet (1898) OCLC:33326430^{all editions}
• Physical and micrometric observations of Mars and the development and significance of its phenomena, with William H. Pickering OCLC:33326417^{all editions}
• Observations of Mars, 1896 and 1897 (1900) OCLC:33326384^{all editions}
• Observations of the planet Jupiter and its satellites, 1894 and 1895 (1900), OCLC:33326369^{all editions}
• Mars on glacial epochs (1901) OCLC:46727332^{all editions}
• The Solar System (1903) OCLC:575185^{all editions}
• The Cartouches of Mars (1903) OCLC:20546491^{all editions}
• Observations of the planet Mars during the oppositions of 1894- made at Flagstaff, Arizona (1905) OCLC:56489059^{all editions}
• First photographs of the canals of Mars, Proceedings of the Royal Society: Mathematical and physical, ser. A, vol. 77, no. A515 (8 Feb. 1906)
• Mars and its Canals (1906) OCLC:1442219^{all editions} (external scan)

Is Mars habitable?, a 1907 rebuttal by Alfred Russel Wallace

• New photographs of Mars, taken by the astronomical expedition to the Andes and now first published (1907) OCLC:24632638^{all editions}
• Mars as the Abode of Life, 1908 OCLC:1526909^{all editions} (external scan)
• The Evolution of Worlds, 1909 (transcription project)
• The plateau of the San Francisco peaks in its effect on tree-life (1909) OCLC:71118217^{all editions}
• Our friends, the enemy. A discussion bearing on scientific ethics, with concrete illustrations (1909) OCLC:41580173^{all editions}
• Die Selbstbildnisse der Planeten Vortr., geh. im Verein von Freunden der "Berlin Treptow-Sternwarte"; Aus d. engl. Ms. ins Dtsch. übertr. (1910) OCLC:72608032^{all editions}
• Die Seele des fernen Ostens. (1911) OCLC:13111350^{all editions}
• Spectroscopic proof of the repulsion by the sun of gaseous molecules in the tail of Halley's comet (1911) OCLC:49460405^{all editions}
• Mars i zhiznʹ na nem (Russian, 1912) OCLC:63172241^{all editions}
• The Origin of the Planets (1913) OCLC:13307374^{all editions}
• Memoir on Saturn's Rings (1915?) OCLC:22530243^{all editions}

Travel writing and Japan

• Korean photographs : the first photographs of their kind ever taken in Korea (1883-1884) OCLC:23013967^{all editions}
• Chosön; the land of the morning calm : a sketch of Korea (1885) OCLC:5525403^{all editions}
• A comparison of the Japanese and Burmese languages, Transactions of the Asiatic Society of Japan. Vol. 19, pt. 3.
• Esoteric Shinto, Transactions of the Asiatic Society of Japan. Vol. 21, p. 106-135, 152-197, 241-270; vol. 22, pt. 1, p. [1]-26. OCLC:63836336^{all editions}
• The Soul of the Far East Project Gutenberg
• Occult Japan (1894)
• Noto: An Unexplained Corner of Japan (1891) Project Gutenberg(external scan)
• The Overland Expedition of the Messrs. Jardine Amazon link

• Collected Writings on Japan and Asia, including Letters to Amy Lowell and Lafcadio Hearn, 5 vols., Tokyo: Edition Synapse. ISBN 978-4-901481-48-9

Early poetry

• Lines on Oliver Wendell Holmes, (1895) OCLC:6897854^{all editions}
• Sakura no Saku, poem presented in 1889 read at Harvard Commencement for Phi Beta Kappa
• Lines on his Mathematics Instructor, 1889
• Ontake, blank verse published in the 1893 Liber Scriptorum of the Author's Club of New York

Other

• Augustus Lowell, 1901 address to the American Academy of Arts and Sciences

• Letter to his sister regarding her concerns about his biography of their father, August 30, 1901

• Lowell Oration to the Executive Committee of the Fourth of July Celebration, 1901. Flagstaff, Ariz. OCLC:3085258^{all editions}
• Immigration versus the United States : an address delivered at Phoenix, Arizona, February 17, 1916, OCLC:68705088^{all editions}