RTX may refer to:

Biology and medicine Radiation therapy, is therapy using ionizing radiation, generally as part of cancer treatment to control or kill malignant cells Resiniferatoxin, a natural, high-potency ligand that activates the capsaicin (VR1, TRPV1) receptor Rituximab, a monoclonal antibody used in the treatment of leukemia, lymphomas, transplant rejection and autoimmune disorders RTX toxin (repeats in toxin), a type of toxin secreted by Gram-negative bacteria

Computing and arts RTX2010, a radiation-hardened microprocessor which has been used in numerous spacecraft RTX (operating system), a real-time operating system extension for Microsoft Windows Keil RTX, a real-time operating system (RTOS) produced by Keil for ARM devices Ray tracing (graphics), as implemented by Nvidia, is known as RTX, whereas AMD's implementation differs from RTX, though it's not unusual for people to refer to it as such Nvidia RTX, a series of Nvidia graphic cards in the GeForce brand .rtx (ring tone XML file extension), of the Ring Tone Transfer Language RTX (event), a video game and internet convention held annually in three cities RTX Red Rock, a 2003 action-adventure game for the PlayStation 2, which was developed and published by LucasArts RTX, a band formed by Jennifer Herrema

Other uses RTX Corporation, formerly Raytheon Technologies, an American defense industry company

See also GTX (disambiguation)