The majority of stars are much larger than the Earth. Even the Sun, which is a relatively average star, is many times the size of the Earth. The largest star is 1,800 times as large as the Sun.
On the scale of the universe, the Earth is very small. Compared to the Sun, the Earth is barely larger than a dot, so almost all stars are quite a bit larger than the Earth. Red giants are some of the largest and long-lived stars, reaching huge sizes that are hundreds of times larger than the Sun. White dwarfs are on the smaller scale, but are still many times the size of the Earth.
However, there is a rare star type that is created in the process of star death that is smaller than the Earth. Neutron stars are the result of very large stars exploding and pushing away their outer gas layers, leaving only the internal core behind. These stars are usually less than 13 miles in diameter, but have a very high mass. A neutron star of around 12.5 miles in diameter weighs 1.5 times as much as the Sun. Smaller neutron stars are possible, which are even more massive and dense.