There are probably thousands. Most archaeologists specialize in one geographic area or one time period, often both! An archaeologist may also specialize in a particular aspect such as flora or fauna, architecture, ceramics or lithics. There is no end to the possibilities. Some of them are listed below including some theoretical approaches.

Archaeoastronomy, Behavioural archaeology, Biblical archaeology, Bioarchaeolgy, Classical archaeology, Cognitive archaeology, Commercial archaeology, Egyptian archaeology, Environmental archaeology, Ethnoarchaeology, Evolutionary archaeology, Experimental archaeology, Feminist archaeology, Field archaeology, Forensic archaeology, Gender archaeology, Geoarchaeology, Historical archaeology, Industrial archaeology, Interpretitive archaeology, Landscape archaeology, Maritime archaeology, Marxist archaeology, Mediaeval archaeology, Nationalist archaeology, Nautical archaeology, Neo-Marxist archaeology, New Archaeology, Processual archaeology, Post-Processual archaeolgy, Osteoarchaeology, Settlement archaeology, Social archaeology, Underwater archaeology, Urban archaeology, Zooarchaeology

Jeffrey R. Ferguson has written:

'Designing experimental research in archaeology' -- subject(s): Material culture, Methodology, Experiments, History, Technology, Archaeology, Research

American Treasures - 2010 Archaeology 1-1 was released on:

USA: 5 June 2010

USA: 15 February 2011

Maritime archaeology is archaeology conductred under water.

America From the Ground Up - 2014 The Science of Archaeology 1-3 was released on:

USA: May 2014