An air guide grille is provided, the air guide grille includes a plurality of grid strips, wherein the plurality of grid strips are arranged in a plurality of rows, an air inlet side edge of each of the plurality of grid strips is of a corrugated shape, and an air inlet side edges of two adjacent rows of grid strips in the plurality of grid strips is provided in a staggered manner along a length direction of the corrugation. In order to form a corrugated air inlet between two adjacent rows of gate strips, the each of the plurality of grid strips has an air guide surface inclined toward a first direction along the air guiding direction thereof, and the first direction is parallel to an undulating direction of a corrugation. In addition, an air inlet panel and an air conditioner are also disclosed.