According to recent U.S. census data, there are over 700,000 same-gender couples, of which 114,00 have children. U.K. census data further revealed over 200,000 same-gender parented families, and there is evidence that these numbers have been increasing in the last few decades. Between the late 1980s and early 1990s, research on the psychosocial well-being of LGB families was established with a focus on the potential impact of parents’ sexual orientation on the psychological adjustment of their children. Interest in LGB families was evidenced by the growing political and public attention, and became a central issue within the LGBT+ movement across the Western world, especially in Europe and the United States. However, attitudes toward LGB family policies have not evolved in a linear fashion insofar as they have accompanied the constant back and forth in LGB family policies and legislation. Negative attitudes toward LGB family policies are rooted in the negative evaluations of LGB individuals based on beliefs that LGB people are less fit as parents or unable to form and sustain healthy relationships because of their sexual or gender identity. However, these negative beliefs differ according to heterosexual individuals’ characteristics. Research has shown that men, older, less educated, non-White, politically conservative, highly religious, and authoritarian, as well as those who believe that homosexuality is controllable, strictly adhere to traditional gender roles and authorities, and do not have frequent or close contact with LGB individuals, hold higher levels of sexual prejudice toward LGB individuals and LGB family policies. As of January 2020, same-gender marriage and parenthood are recognized in around 30 countries worldwide, although some countries recognize some forms of same-gender unions, but not marriage, whereas others recognize the right of LGB individuals to have children but not to marry. LGB family policies have progressed mostly through two different pathways: (a) the judicial pathway, which has involved litigation and court rulings on specific matters related to same-gender relationships and parenthood and which was undertaken in the United States, and (b) the legislative pathway, which has relied on political discussion and policy initiatives and was undertaken in the Iberian Peninsula (Portugal and Spain). The different pathways to equality in LGB family policies have different impacts for LGB individuals. In particular, the constant negative messages regarding same-gender couples as being unable to have healthy relationships have been shown to contribute to chronic minority stress and psychological distress among LGB individuals. By contrast, the legalization of same-gender marriage and parenthood provide important benefits and protections for LGB families in addition to promoting their well-being. Examining the evolution of attitudes and legislation regarding LGB family policies is important to inform further initiatives aimed at correcting inequalities for LGB families.