Latar Belakang: Rendahnya dukungan pasangan usia subur dalam program KB IUD mengakibatkan rendah peminat akseptor IUD. Survei pendahuluan data Petugas Lapangan Keluarga Berencana (PLKB) di Puskesmas tanah Luas tahun 2022 tercatat sebanyak 3956 PUS, dengan peserta aktif 2053 pasangan usia subur. Pencapaiannya hanya 57,21% dan 42,79% adalah Unmeet Need. Jenis penelitian ini analitik deskriptif dengan pendekatan desain cross sectional. Populasi dalam penelitian ini seluruh pasangan usia subur (PUS) yang ber KB Aktif yang tersebar diwilayah kerja Puskesmas Tanah Luas Kabupaten Aceh Utara dengan jumlah populasi sebanyak 2053 PUS dan sampelnya 95 PUS. Hasil penelitian menunjukkan bahwa ada hubungan pengetahuan, sikap, sosial budaya, kualitas pelayanan KB, dukungan suami, sumber informasi dengan keikutsertaan PUS menjadi akseptor KB IUD. Factor yang paling dominan dalah variabel sikap (p=0,000, OR=44,167). Kepada responden diharapkan dapat menambah pengetahuan tentang KB IUD sehingga sadar akan penggunaan kontrasepsi IUD dan memahami tentang fungsi, manfaat serta efektifitas kontrasepsi IUD sehingga responden tidak lagi takut akan hal-hal yang didengar tidak berlandasakan pengetahuan. Dan bisa memilah informasi yang patut untuk di pahami, sehingga dapat menentukan sikap yang akan dilakukan. Kata kunci : Predisposing, Enabling dan Reinforcing,Keikutsertaan PUS, KB IUD Background: The low support of fertile age couples in the IUD KB program has resulted in low interest in IUD acceptors. The preliminary survey of Family Planning Field Officer (PLKB) data in the Extensive Public Health Center in 2017 was 3956 PUS, with active participants of 2053 couples of childbearing age. The achievement is only 57.21% and 42.79% is Unmeet Need. This type of research is descriptive analytic with cross sectional design approach. The population in this study were all reproductive age couples (PUS) with active family planning in the working area of Tanah Luas Health Center, North Aceh Regency, with a population of 2053 PUS and 95 PUS. The results showed that there was an influence of knowledge, attitudes, socio-culture, quality of family planning services, husband's support, information sources with PUS participation as IUD KB acceptors. In addition, the six variables that are the most dominant with EFA participation into IUD KB acceptors are knowledge variables (p = 0,000, OR = 44,167). The respondents are expected to be able to increase knowledge about IUD family planning so that they are aware of the use of IUD contraception and understand the function, benefits and effectiveness of IUD contraception so that respondents no longer fear the things heard are not based on knowledge. And can sort out information that deserves to be understood, so that it can determine the attitude to be taken. Keywords: Predisposing, Enabling and Reinforcing, PUS Participation, KB IUD