Penelitian ini bertujuan untuk mengetahui Tindak Pidana Aborsi Pada Anak Korban Persetubuhan Oleh Ayah Tiri untuk mengetahui hal tersebut terutama Bentuk penegakan hukum terhadap tindak pidana aborsi pada anak korban kekerasan seksual oleh ayah tiri, kemudian pertimbangan hukum hakim terhadap kasus tindak pidana aborsi pada anak korban kekerasan seksual oleh ayah tiri Studi Putusan Nomor: 58/Pid.Sus/2020/Pn/kba. Tipe penelitian skripsi ini menggunakan penelitian hukum normatif, Teknik pengumpulan sumber bahan hukum dilakukan dengan metode studi kepustakaan dengan cara mengumpulkan dan menganalisis sumber bahan hukum primer, dan sekunder. Metode penelitian menggunakan jenis pendekatan perundang-undangan, pendekatan kasus, dan pendekatan konseptual. Berdasarkan hasil penelitian penulis menyimpulkan bahwa penegakan hukum terhadap tindak pidana aborsi pada anak korban persetubuhan oleh ayah tiri melibatkan berbagai aspek hukum yanag akan di kenakan sanksi sesuai dengan undang-undang perlindungan anak. Pertimbangan hukum hakim dalam putusan perkara Nomor: 58/Pid.Sus/2020/PN. Kba berdasarkan dakwaan penuntut umum didasarkan pada alat-alat bukti berupa keterangan saksi-saksi, alat bukti surat yaitu visum et repertum dan keterangan terdakwa serta fakta-fakta lengkap di depan persidangan kasus aborsi anak korban persetubuhan oleh ayah tirinya dinilai kurang tepat. Hukuman yang dijatuhkan tidak sebanding dengan pelanggaran Undang-Undang Perlindungan Anak Pasal 81 ayat (3) jo Pasal 45A, yang seharusnya menjatuhkan hukuman lebih berat, serta tidak kurang memperhatikan keterlibatan pelaku lainnya.

Kata kunci : Persetubuhan, Anak, Ayah Tiri.

This study aims to determine the criminal act of abortion on child victims of sexual intercourse by stepfathers, especially the form of law enforcement against these criminal acts and the legal considerations of judges in the case of criminal abortion on child victims of sexual violence by stepfathers based on Decision Study Number 58/Pid. Sus/2020/Pn/kba. This thesis research type utilized normative legal research Collecting sources of legal material was carried out using the literature study method by collecting and analyzing primary and secondary sources of legal material. The research method used the types of statutory approaches, case approaches, and conceptual approaches. Based on the results of the research, it can be concluded that law enforcement against the crime of abortion on child victims of intercourse by a stepfather involves various legal aspects that were sanctioned following the child protection law Legal considerations of the judge in the verdict of case number 58/Pid. Sus/2020/PN/Kba based on the prosecutor's indictment based on evidence in the form of witness testimony, letter evidence, namely visum et repertum, and the testimony of the defendant, as well as the complete facts before the trial of the case of abortion of a child victim of sexual intercourse by his stepfather, it is considered inappropriate The sentence imposed was not proportional to the violation of the Child Protection Law Article 81, verse (3), or article 45A, which should have imposed a heavier sentence, and ignored the involvement of other perpetrators. Keywords Sexual intercourse, child, stepfather.