"Sto lat" (One Hundred Years) is a traditional Polish song that is sung to express good wishes, good health and long life to a person. The song's author and exact origin are unattributed. The song is sung both at informal gatherings (such as birthdays or name days) or at formal events, such as weddings. At state events it is not unusual to hear it performed by an orchestra or a military band. It is also noted for being an integral part of Polish immigrant culture even long after assimilation.

The song serves the equivalent function of "Happy Birthday To You" or "For He's a Jolly Good Fellow". Although a secular song, its message is similar to that of the Ukrainian song "Mnohaya lita" (Многая літа, Many Years), derived from a Byzantine liturgical hymn.

This translates roughly into English as:

The phrase "Sto lat!" is also often used to wish someone longevity or good fortune, or as a toast, without the song. However, the use of "Sto lat!" in this manner will often lead to the song being sung by those present. The phrase is also sometimes used to acknowledge someone's sneezing - similarly to "God bless you", though for that particular occasion a simple na zdrowie ("To your health") is more frequently used.

Datuk Mohammad Nor Khalid (Jawi: محمد نور خالد), more commonly known as Lat, (born 5 March 1951) is a Malaysian cartoonist. Winner of the Fukuoka Asian Culture Prize in 2002, Lat has published more than 20 volumes of cartoons since he was 13 years old. His works mostly illustrate Malaysia's social and political scenes, portraying them in a comedic light without bias. Lat's best known work is The Kampung Boy (1979), which is published in several countries across the world. In 1994, the Sultan of Perak bestowed the honorific title of datuk on Lat, in recognition of the cartoonist's work in helping to promote social harmony and understanding through his cartoons.

Born in a village, Lat spent his youth in the countryside before moving to the city at the age of 11. While in school, he supplemented his family's income by contributing cartoon strips to newspapers and magazines. He was 13 years old when he achieved his first published comic book, Tiga Sekawan (Three Friends Catch a Thief). After failing to attain the grades that were required to continue education beyond high school, Lat became a newspaper reporter. In 1974, he switched careers to be an editorial cartoonist. His works, reflecting his view about Malaysian life and the world, are staple features in national newspapers such as New Straits Times and Berita Minggu. He adapted his life experiences and published them as his autobiographies, The Kampung Boy and Town Boy, telling stories of rural and urban life with subtle comparisons between the two.