Storage structure of saddle riding type vehicle

[Object] To provide a storage structure of a saddle riding type vehicle with enhanced ease of storage and removal of small storage articles. [Solving Means] An article storage unit 132 is provided so as to include an opening 132K in a rear surface of a front portion cover and at a position facing a rider and to be longer in a longitudinal length extending in a vehicle longitudinal direction than in height. In addition, a removable tray 821 including riser walls 824 along its periphery is disposed at a position closer to a lid 134 than an inner wall 132A of the article storage unit 132.