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In rodents, a circadian signal from the suprachiasmatic nucleus (SCN) is essential for the pro‐oestrous surge of gonadotrophin‐releasing hormone (GnRH), which, in turn, induces luteinising hormone (LH) surge and ovulation. We hypothesised that kisspeptin (KP) neurones in the anteroventral periventricular and periventricular preoptic nuclei (AVPV/PeN) form part of the communication pathway between the SCN and GnRH neurones. In anterograde track tracing studies, we first identified vasopressin (VP)‐containing axons of SCN origin in apposition to KP‐immunoreactive (IR) neurones. Studies to quantify this input relied on the observation that VP‐synthesising neurones in the SCN differ from other VP systems in their lack of galanin expression. In ovariectomised mice, 30.79 ± 1.63% of KP‐IR perikarya and proximal dendrites within the AVPV/PeN received galanin‐negative VP‐IR varicosities. Oestrogen …