The Lancer 29 Mark III is a recreational keelboat built by Lancer Yachts in the United States from 1977 until 1981. Also called the Lancer 29-3, in 1982 it was renamed the Lancer 30.
The fiberglass hull has a raked stem, a plumb transom, and a skeg-mounted rudder. The boat has a draft of with the standard keel and with the optional shoal draft keel. It has a hull speed of .
The boat may be optionally fitted with a Japanese Yanmar diesel engine of , or , or a gasoline engine. It could also be equipped with a well-mounted outboard motor.
Cabin headroom is . The fresh water tank has a capacity of .
It is a masthead sloop rig.