In 2005–2006 Harvard Divinity School observed the fiftieth anniversary of the admission of women to the school, and the twenty-fifth anniversary of the Women's Studies in Religion Program. This special issue of the Harvard Theological Review extends the celebration of these two anniversaries by gathering highlights of their intellectual fruit. The year-long celebration began with a convocation at which Harvard President Lawrence Summers joined Divinity School Dean William Graham and the faculty, staff and students in marking the historic anniversary. The convocation address, “A Short Half-Century: Fifty Years of Women at Harvard Divinity School,” is included as the first entry in this issue. Throughout the year, distinguished alumnae delivered prestigious named lectures, and panels recalled particularly salient outcomes of women's presence. The year concluded with a session at which the first women students who entered in 1955 returned to HDS to reflect on their experiences and careers.