Batu Pahat is a district in the state of Johor, Malaysia. It lies southeast of Muar, southwest of Kluang, northwest of Pontian, and south of Segamat and the new Ledang district. The capital of the district is Bandar Penggaram, Batu Pahat.

The capital of the district Bandar Penggaram,Batu Pahat is located at 1°51′N 102°56′E / 1.85°N 102.933°E / 1.85; 102.933. It is 239 km from Kuala Lumpur. The next nearest town is Muar which is 50 km northwest of Batu Pahat. The town of Kluang is located about 52 km to the northeast. Johor Baru is located about 70 to 100 km to the southeast of the town.

The district itself borders the districts of Segamat and Ledang to the north, Kluang to the east, Muar to the west and shares a border in the southeast with the district of Pontian. The coast of the Straits of Melaka lies to the south.

The town acquired the name Batu Pahat, which means "chiselled stone", from the quarries near the estuary. There are multiple theories as to the origin of this name. In around 1456, the Siamese army, led by Admiral Awi Di Chu, camped in Batu Pahat before attacking Malacca. Legend has it that the invading Siamese troops were chiselling rocks at a rocky spot in the coastal village of Kampung Minyak Beku, in hope to get fresh water during their retreat from the Melaka troops, led by Tun Perak, the famous Bendahara (Prime Minister) of the Malacca Empire. Another possible explanation for the origin of the name is the fortress ("a famosa") built by the Portuguese after capturing Melaka, which was made from granite rocks taken from the mouth of Sungai Batu Pahat .