Abstract: The present invention provides a non-reductive normalisation based data indexing and search system and method. In one embodiment, a computer-implemented method for indexing raw digital data in a searchable format includes translating raw digital data in a first data format to a second data format using a set of extensible parsers, forming non-reductive normalised data entities from the digital data in the second format using a set of extensible entity builders, indexing each of the non-reductive normalised data entities in one or more indexes using a set of extensible indexers, and searching the one or more indexes containing the non-reductive normalised data entities for digital data based on a search query for the digital data.