119 (number)

119 is the natural number following 118 and preceding 120.

Mathematics

119 is a Perrin number.
119 is the order of the largest cyclic subgroups of the monster group.

Telephony

119 (emergency [telephone number)|119] is an emergency telephone number in some countries
A number to report youth at risk in France
119 is the emergency number in Afghanistan that belongs to police and interior ministry.
The South Korean emergency call number
The Chinese fire station call number
119 is the number for the UK's NHS Test and Trace service