article, In this, we prove the existence, and uniqueness and some stability results for fractional integro-differential equation of reconstruction of the unknown time-dependent boundary function from an additional integral measurement by the use of Rothe time discretization. Numerical experiments are given to illustrate the results. 2026. “Solution to Fractional Integro-Differential Equation With Unknown Flux on the Dirichlet Boundary”. Discontinuity, Nonlinearity, and Complexity 11 (4): 723-34. https://doi.org/10.5890/DNC.2022.12.010.