Highway 4 (Hebrew: כּֽבִישׁ אַרְבַּע, Kvish Arba' ) is an Israeli highway that runs along Israel's entire coastal plain of the Mediterranean Sea, from the Rosh HaNikra border crossing with Lebanon in the North to the Erez Border Crossing with the Gaza Strip in the South.

Until the 1990s and the withdrawal of Israel Defense Forces from most of the Gaza Strip due to the Oslo Accords, Highway 4 extended south all the way to Rafah and the Egyptian border.

The rest of the highway consists of multiple lanes in each direction except between Erez Crossing and Yad Mordechai, Rosh HaNikra and Nahariya, and between Tirat Carmel just south of Haifa and Fureidis, which have a single lane of traffic in each direction.

While there have been multiple proposals to widen the Haifa–Fureidis section, these have so far been blocked due to opposition from nearby residents who would like the highway in the area to retain its current rural character.

[4] The project includes a massive interchange at the junction with Highway 57 and a long cut-and-cover tunnel with a road and intersections above it at the entrance to Hadera to separate local and intercity traffic.