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Semper Paratus is a Latin phrase, meaning "Always Ready". Sometimes shortened to Semper P. It is used as the official motto of some organizations, such as the United States Coast Guard. A 1928 march of the same name is also used as the U.S. Coast Guard's official march, and the phrase appears on the organization's flag.

• Semper Paratus is the motto of The Royal Hamilton Light Infantry (Wentworth Regiment) of the Canadian Army formed in 1862 and headquartered at the James Street Armoury in Hamilton, Ontario, Canada.^[1]
• Semper Paratus is the motto of The Brockville Rifles a Primary Reserve infantry regiment of the Canadian Army formed 5 October 1866 and headquartered at the Brockville Armoury in Brockville, Ontario, Canada.^[1]
• "Semper Paratus" is also the motto of Galt Collegiate Institute (GCI) in Cambridge, Ontario, the first high school in Canada to become a Collegiate Institute (established 1852).
• Semper Paratus is the motto of the Essex and Kent Scottish of the Canadian Army formed in 1954 through the amalgamation of The Essex Scottish Regiment and The Kent Regiment.

• The phrase is translated into the Korean "항상 준비", and became the motto of the Korean Children's Union.

• "Semper Paratus" is the Motto of the Roxas City Fire Station, Capiz, Philippines. It is embedded in its official logo and flag. Semper Paratus inspires firefighters to be Always Ready Anytime, Anywhere in Any Weather. Semper P is a form of greeting at Roxas City Fire Station.

• "Laging Handa" is the Filipino translation of "Always Ready", the English translation of "Semper Paratus". The motto "Laging Handa" served as the motto of the Boy Scouts of the Philippines.

• "Semper Paratus" is the motto of the Hungarian Disaster Victim Identification Team (HUN DVI), in addition to the Nemo Resideo (No One Left Behind).

• Semper Paratus is the motto of Royal Hong Kong Auxiliary Air Force,^[2] it is also used by Hong Kong Government Flying Service.

• Semper Paratus is the motto of the Romanian Obstacle Course Racing Association - also known as OCR Romania - the organization that founded the Romanian Obstacle Sports Federation (established in 2021).

• Semper Paratus is the motto used by numerous armigers, including the Barons Clifford of Chudleigh,^[3] Armytage baronets, of Kirklees, Yorkshire, and Elphinstone baronets, of Sowerby, Cumberland.^[4]
• It is also the family motto of the family Upton and has been used since the 11th Century.^[5]
• Tremeirchion Cricket club official motto
• Bowdon Cricket Club official motto
• Netherlee Primary School official motto
• New Romney Fire Brigade official motto
• Grangemouth High School official motto

• Semper Paratus is the motto of the United States Coast Guard, and is the title of their marching song "Semper Paratus".^[6]
• It is the motto of the U.S. Army 16th Infantry Regiment, Fort Riley, Kansas.^[7]
• It is the motto of the 9th Reconnaissance Wing, a United States Air Force unit assigned to the Air Combat Command and Sixteenth Air Force, stationed at Beale Air Force Base.
• It was the motto of the United States Navy destroyer tender USS Sierra (AD-18).^[8]
• It is the motto of the Long Beach (California) Fire Department.
• It is the motto of the Bradford County Sheriff's Office of Emergency Management (Starke, Florida).
• It is the motto of the FEMA Region 5 Incident Management Assistance Team (IMAT), Chicago, Illinois.

• It is the motto of Queensland Fire and Rescue Service, a part of Queensland Fire and Emergency Services
• It is the motto of the 5th Battalion of the 5/6th Battalion, Royal Victorian Regiment
• It is the motto of 'A' Battery, Royal Regiment of Australian Artillery (RRAA). 'A' Battery is the oldest and longest continuous full-time serving unit in the Australian Defense Force. 'A' Battery was established on the 1 August 1871, being also the date of the RRAA birthday.
• It is the motto of the Hobart Fire Brigade (HFB)^[9] a brigade within the Tasmania Fire and Emergency Service (TFES).
• It is the motto of no. 430 Sqn, Australian Air Force Cadets (AAFC) (Macedon Ranges)

• It is the motto of the Turkish Naval Forces.