PROBLEM TO BE SOLVED: To provide a shampoo composition allowing the hair to be combed smoothly with fingers both at the time of rinsing and after using conditioner.SOLUTION: The invention provides a shampoo composition containing a component (a): 3-30 mass% of a trimethylglycine derivative of acyl methyltaurine represented by the formula (1) of Claim 1, a component (b): 3-30 mass% of an amphoteric surfactant, a component (c): 0.03-3 mass% of cationized polymer, and a component (d): 37-94 mass% of water, wherein, in the component (a), the content of the acyl methyl taurine derivative represented by the formula (1) where RCO is an acyl group of carbon number 14 is 26 mass% or more, and the mass ratio ((a)/(b)) of the component (a) and the component (b) is 0.2-3.SELECTED DRAWING: None