|This article is about the Story Library book. You may be looking for the excavator, the Talyllyn Railway diesel engine, the cleaner or the snack bar manager.|
Alfie, re-titled Alfie the Excavator in 2011 and A Really Useful Engine in 2015, is the forty-ninth book in the My Thomas Story Library series.
Alfie loves demolition, but does not like when the others tease him about his size. He soon finds out that being small is not so bad when he saves a family of kittens from a collapsing building.
- On the 2015 cover, Alfie is referred to as an engine instead of an excavator.