Opt

Opt may refer to:

• /opt, a directory in the Filesystem Hierarchy Standard
• Opt out, in broadcasting, when a nation or region splits from the main national output
• Opt-out, to avoid receiving unsolicited product or service information
• Opting out, a political expression in Canada, describing the intention of a province to remove itself from a program administered by the federal government
• Opt in e-mail, the option to receive bulk e-mail

The abbreviation Opt may refer to:

• Option key, a modifier key on Apple keyboards

The acronym OPT may refer to:

• Occupied Palestinian Territory
• Optional Practical Training, a temporary employment authorization for F-1 students
• Optimized Production Technology, a production planning system created by Eliyahu M. Goldratt
• Population Matters, (formerly known as the Optimum Population Trust), a UK charity devoted to tackling overpopulation.