Shah (Ukrainian: шаг) was the name of several currencies used in Ukraine. The name derives from shilling via shelyag (sheleg; Russian: шеляг, шелег; Polish: szeląg). The forms shahy (шаги, for 2 to 4) and shahiv (шагiв, for five or more) are declensional plurals of the noun used in denominations, for example, 2 shahy, 20 shahiv.
The term "shah" was the Ukrainian name of the Polish-Lithuanian Commonwealth's silver coin of 17th-18th centuries with face value of 3 grosz, coined since 1528, especially during the times of Sigismund III Vasa. Later, the name was transferred to the Russian copper coin of 2 kopecks. Since 1839 when silver money counting was reinstated in the Russian Empire, the term shah was transferred to the silver ½ kopeck. This term for the kopeck was in use until 1917.
In 1917, banknotes were introduced in the newly independent Ukraine. These were denominated in shah, hryvnia and karbovanets, with 100 shahiv = 1 hryvnia and 2 hryvni = 1 karbovanets.
At the beginning of the 20th century, during World War I (1914—1918), many countries issued currency in the form of stamps. It was done similarly in early independent Ukrainian states: in West Ukrainian National Republic and Ukrainian People's Republic. There, these money stamps were called shahivky (шагiвки, singular: шагiвка, shahivka). Stamps in denominations of 10, 20, 30, 40, 50 shahiv were issued.