A wire routing structure includes a main body held by a vehicle body fixing member, and which includes a plurality of spaces having a plurality of wires inserted therein, and a partitioning structure that partitions the respective spaces. The main body has a split structure that allows the main body to be opened. The vehicle body fixing member includes a fixing section configured to be fixed to a vehicle body, and a holding section connected to the fixing section and holding the main body. The holding section includes a band fixing structure including a band that holds the main body in a closed state.