Yes, each nation has a motto particular to itself as well as a flag, national anthem, national symbols of various types, etc.
The motto of Nation's Giant Hamburgers is 'Best since 1952'.
The motto of Church Society is 'For Bible, Church and Nation.''.
The motto of SwoopThat.com is 'Every Book. Every Seller'.
The motto of Comanche Nation College is 'Kimu tsi nu mu mu ?ai tu sua'.
The motto of Shobhit University is 'Empowering nation through Education'.
The motto of Hawaii Baptist Academy is 'Christ For Every Nation'.
Royal Bafokeng Nation's motto is 'A e wele metsing'.
The motto of Nation's Giant Hamburgers is 'Best since 1952'.
Pussellawa's motto is 'Service to the Nation'.
Healthiest State in the Nation Campaign's motto is 'Making Washington the Healthiest State in the Nation'.
It would depend on which nation you mean
The motto of the BBC (British Broadcasting Corporation) is "Nation shall speak peace unto nation".
Sahuayo's motto is 'Nation, Justice, Progress'.
Makurdi's motto is 'Food Basket of the Nation'.
It's got a motto. It is 'One Zambia, One nation'
Bulembu's motto is 'Restore a town. Transform a nation.'.
The motto of Ador Welding is 'Welders to the Nation'.