A dual-bearing reel includes a reel body and a spool. The reel body includes a first side plate, a second side plate, and a connecting portion connecting the first and second side plates. The spool includes a bobbin trunk, a first flange portion, and a second flange portion. The first flange portion is disposed on a first side plate side of the bobbin trunk, and has a diameter larger than the diameter of the bobbin trunk and a first cylindrical surface disposed face to an inner perimeter portion of the first side plate and extends toward the first side plate side. The second flange portion is disposed on a second side plate side of the bobbin trunk and has a diameter larger than the diameter of the bobbin trunk. The first side plate has a groove portion recessed radially outwardly in at least a portion of an inner perimeter portion.[課題] 對於雙軸承捲線器，可以減少在捲線器本體及捲筒的凸緣部之間形成的水膜的面積。 [技術內容] 雙軸承捲線器(100)，是具備：捲線器本體(1)、及捲筒(2)。捲線器本體(1)，是具有：第1側板(5a)、及與第1側板(5a)在軸方向隔有間隔地設置的第2側板(5b)。捲筒(2)，是具有：設有朝第1側板側延伸且與第1側板的內周部相面對地配置的第1圓筒面且設於捲線胴部(2a)的第1側板側的比捲線胴部(2a)更大徑的第1凸緣部(2b)、及設於捲線胴部(2a)的第2側板側的比捲線胴部(2a)更大徑的第2凸緣部(2c)，可旋轉地被支撐在捲線器本體(1)。第1側板(5a)，是在與第1圓筒面(2d)相面對的內周面的至少一部分具有朝徑方向外側凹陷形成的凹部(5g)。
