Methods and systems for scenario-based process modeling are described. In one example embodiment, a system for scenario-based process modeling can include a scenario module, a deviations module, a parallel tasks module, and a workflow generation engine. The scenario module is to receive a series of tasks to define a standard process flow. The deviations module is to receive a deviation from the standard process flow. The parallel tasks module is to enable identification of one or more parallel tasks. The workflow generation engine is to generate a workflow model based on the standard process flow, deviation, and one or more parallel tasks.