This article analyzes abortion as a constitutional discussion during the nineties in Colombia. First, it studies how abortion was discussed during the National Constitutional Assembly, and what was the role of the women´s movement. Second, it analyzes three constitutionality lawsuits on abortion before the Constitutional Court during the first generation of judges, it also looks at who were the plaintiffs and the arguments they used. I aim to recover the constitutional history of abortion and to identify the key arguments and actors for legal change. The article reaches the conclusion that judicial decisions on abortion have had progressive debates, that had an origin in the nineties and that are not disconnected from the progress achieved in the last decade, and they represent an argumentative continuity.