TDX is the Tanadgusix Corporation, a shareholder-owned Aleut Alaska Native village corporation.

TDX may also refer to:

Technology TeamDynamix, an american software vendor Trust Domain Extensions, a CPU-level technology proposed by Intel TDX, an Intel chipset TDX, a prototype for the TD-2 microwave relay system developed by Bell Labs

Other uses TDX Group, a company now owned by Equifax Theta Delta Chi, a social fraternity Trat Airport (IATA: TDX), Trat, Thailand