Abstract This paper reports the ionospheric response to Typhoon Chan-hom using Global Positioning System network data from China, combined with observations of an ionosonde chain. Two medium-scale traveling ionospheric disturbances (MSTIDs) were observed around the two landing times of Typhoon Chan-hom. The MSTID with a phase fronts aligned in the north-south direction was detected on the east coast of China at 16:50–18:40 UT on 11 July 2015 and moved westward with a mean horizontal phase velocity of 268 m/s and period of 56 min. Then the concentric MSTID appeared on the northeast of China at 01:50–05:10 UT on 13 July 2015 and propagated in the radial direction with average horizontal phase velocity of 143 m/s and period of 45 min. There may be some connections between the north-south-aligned MSTID and the electrodynamical coupling of the sporadic E layer and the F layer, while the concentric MSTID may be caused by the concentric gravity waves resulting from the bodyforces related with the typhoon.