Data for the manuscript “Momentum-resolved lattice dynamics of parent and electron-doped Sr2IrO4" by C. D. Dashwood, H. Miao, J. G. Vale, D. Ishikawa, D. A. Prishchenko, V. V. Mazurenko, V. G. Mazurenko, R. S. Perry, G. Cao, A. de la Torre, F. Baumberger, A. Q. R. Baron, D. F. McMorrow, and M. P. M. Dean, Phys. Rev. B 100, 085131 (2019).The inelastic x-ray scattering (IXS) data is provided in individual text files in the 'Scans' folder, labelled by compound (parent/doped), temperature and Q-point. The first line of each file is the header, followed by the data. The columns are the energy in meV, the IXS intensity and the error in the intensity respectively.