Handwriting expertise may refer to:

Calligraphy, design and execution of lettering with a writing instrument Diplomatics, scholarly analysis of documents, especially historical documents Graphology, pseudoscience involving analysis of handwriting in an attempt to determine the writer's personality traits Palaeography, study of historical writing systems Questioned document examination, examination of handwriting to assess potential authorship of a piece of evidence in a legal proceeding

See also Forensic handwriting examination (disambiguation)