HTMS Naresuan (FFG-421) (Thai: เรือหลวงนเรศวร), commissioned in 1995, is a modified version of the Chinese-made Type 053 frigate, corporately designed between Royal Thai Navy and China but built by the China State Shipbuilding Corporation in Shanghai.

The Thai Navy had to spend considerable time and effort to correct some of these issues.

[1] On 3 June 2011, Saab announced[2] that it had been awarded a contract for the upgrading of the two Naresuan-class frigates.

On 8 August 2012, DSCA announced[3] Thailand's intention to acquire the Evolved Sea Sparrow (ESSM) missile and associated equipment to upgrade the frigates and a Letter of Offer and Acceptance was signed[4] with Raytheon on 14 January 2013.

[5] During a network centric exercise of the Royal Thai Navy in March 2021 networked data links were established between Gripen fighters and Naresuan, HTMS Taksin and HTMS Chakri Naruebet for the first time.