Kota Tinggi Bypass, Federal Route 3, AH18, is a major highway bypass in Kota Tinggi District, Johor, Malaysia. It incorporates the second bridge of Kota Tinggi which crosses the Sungai Johor. The main purpose of the construction of this bypass is to reduce traffic congestion at the main bridge of Kota Tinggi town centre.

Km	Exit	Interchange	To	Remarks
			North FT 3 AH18 Kuantan FT 3 AH18 Mersing FT 3 AH18 Jemaluang	Continued to original route FT 3
FT 3 AH18 Jalan Jemaluang
		Jalan Kota Tinggi Lama	FT 3 AH18 Kota Tinggi Town Centre	From north only
FT 3 AH18 Kota Tinggi Bypass
		Kota Tinggi North Junctions	FT 92 Pengerang Highway Northwest FT 3 AH18 Kota Tinggi Town Centre FT 91 Bandar Tenggara FT 91 Kluang FT 91 Kota Tinggi Waterfall Muzium Kota Tinggi Kampung Makam (Makam Sultan Mahmud Mangkat Dijulang) Southeast FT 92 Pengerang FT 92 Tanjung Pengelih FT 92 Desaru FT 90 Royal Malaysian Naval Academy (PULAREK)	Junctions
		Petronas Layby	Petronas
		Taman Indah, Kampung Makam	West Jalan Indah Taman Indah, Kampung Makam Kampung Makam (Makam Sultan Mahmud Mangkat Dijulang)	T-junctions
		Kota Tinggi Second Bridge Johor River		Start/End of bridge
		Kota Tinggi Second Bridge Johor River
		Kota Tinggi Second Bridge Johor River		Start/End of bridge
		Sungai Johor Estate
		Kota Tinggi Rifle Range
				Start/End of dual carriageway
FT 3 AH18 Kota Tinggi Bypass
		Kota Tinggi South Junctions	West FT 3 AH18 Johor Bahru-Kota Tinggi Highway FT 3 AH18 Kota Tinggi Town Centre FT 91 Bandar Tenggara FT 91 Kluang FT 91 Kota Tinggi Waterfall	T-junctions
FT 3 AH18 Johor Bahru-Kota Tinggi Highway Jalan Kota Tinggi
			South FT 3 AH18 Johor Bahru-Kota Tinggi Highway FT 94 Kulai FT 3 AH18 Ulu Tiram FT 17 Pasir Gudang FT 3 AH18 Johor Bahru FT 3 AH18 Woodlands (Singapore)	Continued to original route FT 3