We present three q-supercongruences modulo the fifth power of a cyclotomic polynomial by using Jackson’s \(_8\phi _7\) summation and Watson’s \(_8\phi _7\) transformation, together with the creative microscoping method introduced by Guo and Zudilin (Adv Math 346:329–358, 2019). As conclusions, we give a partial q-analogue of a supercongruence of Barman and Saikia, and a complete q-analogue of the supercongruence: \(\begin{aligned} \sum _{k=0}^{(p-1)/4}(16k+1)\frac{(\frac{1}{8})_{k}(\frac{1}{4})_{k}^{5}}{k!(\frac{7}{8})_{k}^{5}}\equiv -\frac{5p^3}{64}\Gamma _p(\tfrac{7}{8})^{6} \Gamma _p(\tfrac{3}{8})^{10} \pmod {p^5}, \end{aligned}\) where \(p\equiv 5\pmod {8}\) is a prime, \((x)_k\) is the Pochhammer symbol, and \(\Gamma _p(x)\) is the p-adic Gamma function.
