To prevent removal of an interface between a case and a button member.SOLUTION: A vehicular operation device comprises a case 30, a button member 64, and an operation member. The case 30 has: an upper wall provided with an opening 34d which penetrates therethrough; a protrusion 74b, provided on a lateral face of the opening, whose center portion in a penetration direction protrudes inward in a ring-shaped manner to an upper portion; and a recess 73b which is formed such that the outer side of an upper face of the protrusion is recessed to the lower side in a ring-shaped manner. The button member 64 has: a pressing part 70 which covers the opening on an upper face of the upper wall; and a cylindrical part 71 which is fitted, on the lateral face of the opening, to the protrusion and the recess. The button member 64 is deformed when the pressing part is pressed from above. The operation member is housed in the case and has a pressed part 58a which is pressed by the pressing part. The operation member is driven when the pressed part is pressed.SELECTED DRAWING: Figure 12
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