齐特琴（德语：Zither）是一种既是指弦乐器中一个类别的乐器，已同时该类别某些特定乐器的名称。德语的本名zither字源来自拉丁词语 cithara，跟现代英语吉他（guitar）同源。结构演化自中世纪拨弦乐瑟（psaltery），流行于奥地利的蒂罗尔和巴伐利亚。琴由一个形状扁平的木质共鸣箱，再加上4或5根的旋律弦和37根的伴奏弦所组成；旋律弦靠向弹奏者，用左手手指上的拨子弹奏。伴奏弦则可用任何一只手的手指弹奏。齐特琴常在轻歌剧中表现情节的乡土气息。

Zither (pronounced /ˈzɪ.ðər/ or /ˈzɪ.θər/, German:[ˈtsɪtɐ]) is a class of stringed instruments.

The word zither is a German rendering of the Latin word cithara, from which the modern word "guitar" is also derived. Historically, it has been used to describe any instrument of the cittern family, or an instrument consisting of many strings stretched across a thin, flat body – similar to a psaltery. This article describes the second variety.