ÖzAmaç: Cinsel işlev bozukluğu, infertil erkeklerde önemli bir sağlık sorunudur. Bu araştırma, infertil çiftlerin erkek partnerlerindeki cinsel işlev bozukluğunu ve bununla ilişkili risk faktörlerini değerlendirmeyi amaçlamaktadır. Gereç ve Yöntemler: Kesitsel çalışma, 2015 yılında Fatemeh Zahra İnfertilite ve Üreme Merkezi, Babol, İran'a sevk edilen infertil çiftlerin 204 erkek partnerleri üzerinde gerçekleştirildi. Cinsel işlev bozukluğu Uluslararası Erektil Fonksiyon (IIEF) İndeksi kullanılarak değerlendirildi. İstatistiksel analizlerde lojistik ve lineer regresyon testleri kullanıldı. İstatistiksel anlamlılık 0,05'ten düşük p değeri olarak kabul edildi. Bulgular: Ortalama toplam IIEF skoru 58,30±8,52 idi. IIEF alanlarının en düşük ortalaması, infertil çiftlerin erkek partnerlerindeki cinsel istek ve daha sonra orgazmik fonksiyonla ilişkiliydi. Erektil fonksiyon, cinsel fonksiyon modelinde en büyük benzersiz varyansa katkıda bulunmuştur (p<0,001, R 2 : %69,8). En güçlü korelasyon değeri, genel memnuniyet ve cinsel ilişki memnuniyeti alanları arasındaydı. Cinsel işlev ile kadının yakınlığı (p<0,002) ve Abstract Objective: Sexual dysfunction is a major health concern in infertile men. This research aims to evaluate the sexual dysfunction and its associated risk factors in the male partners of infertile couples. Materials and Methods: The cross-sectional study was performed on 204 male partners of infertile couples that were referred to Fatemeh Zahra Infertility & Reproductive Center, Babol, Iran, in 2015. Sexual dysfunction was evaluated using The International Index of Erectile Function (IIEF). Logistic and linear regression tests were used for statis¬tical analyses. Statistical significance was considered with a p value less than 0.05. Results: The mean total IIEF score was 58.30±8.52. The lowest mean of IIEF domains was related to sexual desire and then orgasmic function in the male partners of the infertile couples. Erectile function contributed to the greatest amount of unique variance in the model for sexual function (p<0.001, R 2 =69.8%). The strongest correlation value was between the domains of overall satisfaction and intercourse satisfaction. There was a positive statistically significant association between sexual function with wife marital intimacy (p<0.002) and wife sexual function (p<0.001). There was a significant association between sexual dysfunction with job conditions (p<0.037, OR=0.094), and coitus count (p<0.009, OR=6.146). After adjusting for other variables, there was a significant association between sexual function and wife sexual function (p<0.005). Also, after adjusting for other variables, there was a significant association between sexual dysfunction and coitus count (p<0.004, OR=2.496), and job condition (p<0.046, OR=0.081). Conclusion: By considering sexual dysfunction and some related factors, early screening is required for distinguishing predictor factors of sexual dysfunction.