Josh is a diminutive of the given name Joshua. "Josh" may also refer to:

• "Josh", an early pseudonym of Samuel Clemens, better known as Mark Twain
• Josh, the nom-de-plume of the poet Josh Malihabadi
• Josh, potential partner of Amii Jones from Liverpool. (Anyone called Josh)
• Josh (band), a Canadian Indian/Pakistani fusion band
• Josh (TV series), a BBC comedy television series starring Josh Widdicombe, Elis James and Beattie Edmondson
• "Josh" (The Outer Limits), a fourth season episode of the television series The Outer Limits
• Josh (2000 film), a 2000 Bollywood dance film directed by Mansoor Khan
• Josh (2009 film), a Telugu film directed by Vasu Varma
• Josh (2010 film), a Bengali film directed by Rabi Kinagi
• , a Pakistani mystery thriller drama film by Iram Parveen
• Josh (novel), a 1971 young adult novel by Ivan Southall
• City of Josh, a location in the Book of Mormon
• Joshing, a term used for practical jokes similar to "pulling my leg"

The Book of Joshua or Book of Jehoshua ( ) is the sixth book in the Hebrew Bible and the Christian Old Testament. Its 24 chapters tell of the entry of the Israelites into Canaan, their conquest and division of the land under the leadership of Joshua, and of serving God in the land. Joshua forms part of the biblical account of the emergence of Israel, which begins with the exodus of the Israelites from slavery in Egypt, continues with the book of Joshua, and culminates in the Book of Judges with the conquest and settlement of the land. The book is in two roughly equal parts. The first part depicts the campaigns of the Israelites in central, southern and northern Canaan, as well as the destruction of their enemies. The second part details the division of the conquered land among the twelve tribes. The two parts are framed by set-piece speeches by God and Joshua commanding the conquest and at the end warning of the need for faithful observance of the Law (torah) revealed to Moses.