Methods, apparatus, systems and articles of manufacture are disclosed for identification of streaming activity and source for cached media on streaming devices. An example apparatus disclosed herein includes at least one memory, instructions on the apparatus, and at least one processor to execute the instructions to: store, in a content identification information library, first content identification information of a first media presentation, wherein the first media presentation is a streamed media presentation; inspect a network connection of a media streaming device for network activity associated with a second media presentation; determine, in response to an absence of the network activity, the second media presentation is a cached media presentation; infer a streaming source of the second media presentation by matching second content identification information of the second media presentation with the first content identification information of the first media presentation; and generate a second media credit for the second media presentation that includes an inferred streaming source identifier.