TCG Anadolu (L-400) is a drone-carrying amphibious assault ship of the Turkish Navy. It is named after the peninsula of Anatolia (Turkish: Anadolu) which forms the majority of the land mass of Turkey. The construction works began on 30 April 2016 at the shipyard of Sedef Shipbuilding Inc. in Istanbul, with the keel being laid on 7 February 2018. TCG Anadolu was commissioned with a ceremony on 10 April 2023.

The vessel is intended to meet the various needs and requirements of the Turkish Armed Forces, such as sustaining long-endurance, long-distance military combat or humanitarian relief operations, while acting as a command center and flagship for the Turkish Navy.

The Sedef–Navantia consortium won the tender for the amphibious assault ship project of the Turkish Navy. Anadolu used the same design as that of the Spanish ship Juan Carlos I. All of the ship's weapon systems were procured by Turkish firms Aselsan and Havelsan. The ship features a Turkish combat management system, the GENESIS-ADVENT, which was integrated by Aselsan and Havelsan. Aircraft landing is assisted in all weather condition by Leonardo SPN-720 Precision Approach Radar.

Navantia provided design, technology transfer, equipment and technical assistance to Sedef Shipyard of Turkey for the design and development of Anadolu. It is reported that the carrier can sail from Istanbul to New York and back, without the need to refuel.

In December 2013, the Turkish LPD/LHD program was originally estimated to cost €375 million ($500 million). According to the original plan, the Turkish Navy wanted a slightly shorter flight deck without the ski-jump ramp in front, to be optimized for use with only helicopters.

The Turkish Navy later changed its plan and opted for a fully equipped flight deck with the ski-jump ramp in front, after deciding to purchase F-35B STOVL aircraft. Turkey was a Level 3 partner in the Joint Strike Fighter program that led to the F-35 Lightning II. The Turkish Air Force was intending to get the F-35A CTOL version, until the U.S. Senate blocked the export of the fighter jet to Turkey due to its purchase of the S-400 missile system from Russia, which is subjected to CAATSA sanctions. Instead of the F-35B STOVL version, in the short term the Turkish Navy will operate domestically-produced UCAVs such as the Bayraktar TB3 and Bayraktar Kızılelma.

According to the official specifications, Anadolu will be capable of operating up to 10 F-35Bs, if Turkey purchases the aircraft in the future, and 12 medium-sized helicopters in the "V/STOL aircraft carrier" configuration.

The dimensions of the final design are 231 meters (757 ft 10 in) in length, a 32-meter (105 ft 0 in) beam, a 6.8-meter (22 ft 4 in) draft, and 58 meters (190 ft 3 in) in height. Her displacement is 24,660 tons in "V/STOL aircraft carrier" mission configuration, or 27,079 tons in "amphibious assault ship" mission configuration. Her maximum speed is 21.5 knots (39.8 km/h; 24.7 mph) in "STOVL aircraft carrier" configuration, or 29 knots (54 km/h; 33 mph) in "amphibious assault ship" configuration. Her maximum range is 9,000 nautical miles (17,000 km; 10,000 mi) at an economical speed.