A device and method for determining a roll angle of a motorcycle are disclosed. The method includes the step of acquiring a rolling rate ({dot over (λ)}M) of the motorcycle. A first roll angle variable (λ1) is determined from the rolling rate ({dot over (λ)}M). At least one vehicle movement dynamics characteristic variable is determined from a velocity (v), a rotational speed ({dot over (ψ)}M), and/or an acceleration ({umlaut over (z)}M, ÿM) of the motorcycle. A second roll angle variable (λ2) is determined from one or more vehicle movement dynamics characteristic variables. The roll angle (λE) is calculated on the basis of the roll angle variables (λ1, λ2).