Kisspepetin is considered as a key regulator of reproduction, through its direct role in controlling the hypothalamic pituitary gonadal axis necessary for controlling the ovulatory process and indirectly by impacting glucose heamostasis and metabolism. We aimed to examin the correlation between body mass index and level of Kisspeptin in serum and follicular fluid. This study is a cross sectional study done on (80) infertile Iraqi patients aged (18-40 years) scheduled for fresh intracytoplasmic sperm injection cycle. This study is conducted in the High Institute for Infertility Diagnosis and Assisted Reproductive Technologies of Al-Naharin University, from September 2020 to May 2021. For each participant, the GnRH antagonist protocol was used to hyperstimulate the ovaries, and samples from serum and follicular fluid were obtained at day of oocytes retrieval for measuring Kisspeptin level using enzyme linked immunosorbent assay (ELIZA) technique. Serum and follicular fluid Kisspeptin were insignificantly increasing with the increase in the BMI (p value =0.406) (p value = 0.352) respectively. Serum and follicular kisspetin were positively and significantly correlated (r = 0.536, p value= 0.000). Serum and follicular fluid kisspeptin were numerically increasing with the body mass index of infertile women, although this increament is statically insignificant, serum kisspeptin can be used as a mirror image to follicular fluid kisspeptin as there was a statistical association between them in this study.