Federal Route 23, or Jalan Muar–Tangkak–Segamat, is a federal road in Johor, Malaysia, connecting Segamat in the north and Parit Bunga in the south.

The Kilometre Zero of the Federal Route 23 starts at Parit Bunga, at its interchange with the Federal Route 5, the main trunk road of the west coast of Peninsular Malaysia.

At most sections, the Federal Route 23 was built under the JKR R5 road standard, allowing maximum speed limit of up to 90 km/h.

The road was completed around 2015.Meanwhile the second section from Jementah to Just before the Gunung Ledang Resort Waterfall entrance was completed in December 2020[1][permanent dead link‍][2][permanent dead link‍] Construction of the 63-km Segamat–Tangkak–Muar Highway, estimated to cost between RM750 million and RM770 million, was to begin in November 2011.

SoutheastJ187 Jalan SolokSolokBukit Gambir EastJalan PadangKampung Baru Jementah