There are many hundreds of thousands of possible drugs. Any chemical substance with biological activity may be considered a drug. This list categorises drugs alphabetically and also by other categorisations.

This multi-page article lists pharmaceutical drugs alphabetically by name. Many drugs have more than one name and, therefore, the same drug may be listed more than once. Brand names and generic names are differentiated by capitalizing brand names.

See also the list of the top 100 bestselling branded drugs, ranked by sales.

Abbreviations are used in the list as follows:

• INN = International Nonproprietary Name
• BAN = British Approved Name
• USAN = United States Adopted Name
• Two-letter codes for countries

Lists of drugs
1–9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

• Channel modulator, for links to articles referring to drugs that modulate ion channels.
• List of monoclonal antibodies
• List of off-label promotion pharmaceutical settlements
• List of schedules for drugs and poisons
• List of steroid abbreviations