Leslie Feinberg (September 1, 1949 – November 15, 2014) was a highly influential American figure known for their pioneering work in the LGBTQIA+ community. A butch lesbian, transgender activist, and communist, Feinberg's contributions were foundational in the fields of gender studies and transgender rights.

Feinberg authored the groundbreaking novel Stone Butch Blues in 1993, a work that remains a seminal piece in LGBTQIA+ literature. This novel, alongside their non-fiction masterpiece Transgender Warriors (1996), played a crucial role in developing the terminology and understanding of gender issues, bringing these conversations to a broader audience. Feinberg's writing was instrumental in illuminating the lives and struggles of transgender and gender non-conforming individuals, making visible the complexities of gender identity and expression.

In addition to their literary achievements, Feinberg was a committed activist and speaker, deeply involved in the Workers World Party and serving as a managing editor for the Workers World newspaper. Their series, "Lavender & Red," extensively covered LGBT history and contributed significantly to the discourse on LGBT rights and history.

Feinberg's life and work were profoundly intertwined with their advocacy for social justice, highlighting their commitment to transgender rights and the broader fight for equality. Their partnership with prominent lesbian poet-activist Minnie Bruce Pratt and their involvement in Camp Trans further underscored their dedication to activism. Feinberg's impact on the LGBTQIA+ community and their contributions to social justice were recognized with an honorary doctorate from Starr King School for the Ministry.

Feinberg's legacy is a testament to their relentless pursuit of a more inclusive and understanding world, paving the way for future generations in the fight for gender equality and LGBTQIA+ rights.