Tomb KV34 (Arabic: مقبرة تحتمس الثالث, romanized: Maqbarat Tahtamis al-Thaalithi) in the Valley of the Kings (near the modern-day Egyptian city of Luxor) was the tomb of 18th Dynasty Pharaoh Thutmose III.

One of the first tombs to be dug in the Valley, it was cut high in the cliff face of the furthermost wadi.

A steep corridor leads down, in a dog-leg shape, from the entrance past a deep well to a trapezoidal antechamber.

Many of the wall decorations are in an unusual style that, other than KV35 (the tomb of Thutmose III's son, Amenhotep II), is not found elsewhere in the Valley of the Kings.

On a yellow-tinged background (intended to resemble aged papyrus), the earliest known version of the Amduat is traced, depicting the ancient Egyptian deities as simple (almost naive) stick figures, with text written in the cursive hieroglyphic book hand used more commonly for sacred texts on papyrus.