In Genesis’s Noah’s Ark narrative, the Ark was constructed from gopher wood.
Genesis 6:14 tells Noah to make the Ark from gopher wood and then to build rooms in it. The traditional English phrase is “gopher wood,” but the exact identity of this wood is unknown. The Hebrew term occurs only in this passage, so scholars cannot establish with certainty whether it names a particular tree, a type of timber, or a construction method.
Some translations preserve the phrase, while others use expressions such as “cypress wood” or “resinous wood.” These alternatives reflect attempts to interpret an obscure ancient word, not a second explicit material named by Genesis. For a question using the traditional wording of the passage, “gopher wood” is the canonical answer.
The verse separately says the Ark should be covered with pitch inside and outside. That coating was for sealing the vessel, whereas gopher wood describes the primary construction material. Genesis gives no surviving archaeological specimen or technical description that could identify the wood with certainty.