The sexuality of Abraham Lincoln has been the topic of historical speculation and research. No such discussions have been documented during or shortly after Lincoln's lifetime; however, in recent decades, some historians and authors have begun discussing potential evidence that he may not have been heterosexual.

Mainstream historians generally reject theories of Lincoln's homosexuality, noting that the historical context explains away the supposed evidence, that he had romantic ties with women, and that he had four children in an enduring marriage to a woman.

Sexuality of Abraham Lincoln

Historical scholarship and debate

Commentary on President Abraham Lincoln's sexuality has been documented since the early 20th century. Attention to the sexuality of public figures has been heightened since the gay rights movement in the late 20th century. In his 1926 biography of Lincoln, Carl Sandburg alluded to the early relationship of Lincoln and his friend Joshua Fry Speed as having "a streak of lavender, and spots soft as May violets". "Streak of lavender" was period slang for an effeminate man and later connoted homosexuality. Sandburg did not elaborate on this comment. Historian and psychoanalyst Charles B. Strozier believes that it is unlikely for Sandburg to have used that phrase with homosexual implications, suggesting that he instead used the term to note "Speed's and Lincoln's softer, more vulnerable sides, which shielded their vigorous masculinity".

Sexuality of Abraham Lincoln

In 1999, playwright and activist Larry Kramer claimed that he had uncovered previously unknown documents while conducting research for his work-in-progress, The American People: A History. Some were allegedly found hidden in the floorboards of the old store once shared by Lincoln and Joshua Speed. The documents reportedly provide explicit details of a relationship between Lincoln and Speed, and they currently reside in a private collection in Davenport, Iowa. Their authenticity, however, has been called into question by historians such as Gabor Boritt, who wrote, "Almost certainly this is a hoax." C. A. Tripp also expressed his skepticism over Kramer's discovery, writing, "Seeing is believing, should that diary ever show up; the passages claimed for it have not the slightest Lincolnian ring."

Sexuality of Abraham Lincoln

In 2005, C. A. Tripp's book, The Intimate World of Abraham Lincoln, was posthumously published. Tripp was a sex researcher, a protégé of Alfred Kinsey, and was gay. He began writing The Intimate World of Abraham Lincoln with Philip Nobile, but they had a falling out. Nobile later accused Tripp's book of being fraudulent and distorted.

Time magazine addressed the book as part of a cover article by Joshua Wolf Shenk, author of Lincoln's Melancholy: How Depression Challenged a President and Fueled His Greatness. Shenk dismissed Tripp's conclusions, saying that arguments for Lincoln's homosexuality were "based on a tortured misreading of conventional 19th century sleeping arrangements". But historian Michael B. Chesson said that Tripp's work was significant, commenting that "any open-minded reader who has reached this point may well have a reasonable doubt about the nature of Lincoln's sexuality". In contrast, historian and Lincoln biographer Michael Burlingame has said that it is "possible but highly unlikely that Abraham Lincoln was 'predominantly homosexual.'"

In 2009, Charles Morris critically analyzed the academic and popular responses to Tripp's book, arguing that much of the negative response by the "Lincoln Establishment" reveals as much rhetorical and political partisanship as that of Tripp's defenders. In an earlier 2007 essay, Morris argues that in the wake of playwright Larry Kramer's "outing" of Lincoln, the Lincoln Establishment engaged in "mnemonicide", or the assassination of a threatening counter-memory. He put in this category what he called the methodologically flawed but widely appropriated case against the "gay Lincoln thesis" by David Herbert Donald in his book, We Are Lincoln Men.

Lincoln's stepmother, Sarah Bush Lincoln, commented that he "never took much interest in the girls". However some accounts of Lincoln's contemporaries suggest that he had a strong but controlled passion for women. Lincoln was allegedly devastated over the 1835 death of Ann Rutledge. While some historians have questioned whether he had a romantic relationship with her, historian John Y. Simon reviewed the historiography of the subject and concluded that "Available evidence overwhelmingly indicates that Lincoln so loved Ann that her death plunged him into severe depression. More than a century and a half after her death, when significant new evidence cannot be expected, she should take her proper place in Lincoln biography."