TW

TW is an acronym with multiple meanings across geography, science, and online communication. The most widely recognized use is as an international code for Taiwan. In standards and databases, TW is the ISO 3166-1 alpha-2 code assigned to Taiwan (Republic of China). The internet country code top-level domain for Taiwan is .tw. In international sports and diplomacy, Taiwan may participate under different designations, such as Chinese Taipei in the Olympic movement, reflecting the island's political status.

In science and energy contexts, TW denotes terawatt, a unit of power equal to one trillion watts (10^12 W). Terawatts are used to describe collective energy generation and consumption on national or global scales, for example in discussions of global electrical capacity or solar and wind power output.

In online and social contexts, TW is commonly used as an abbreviation for trigger warning, signaling that the following content may be distressing or triggering for some readers.

Other, less standardized uses exist, including personal initials, product codes, or abbreviations within specific organizations. Because TW has multiple meanings, intended interpretation depends on the domain and surrounding context.