1美分硬币（统称：Penny）是美元硬币的一种，又叫林肯一分币（英语：Lincoln Cent），简称林肯分。100美分等于1美元。美分是美元最小的使用单位。美分的符号为¢。

1909年第一次铸造并发行，是美国有史以来流通最久的硬币，由铜锌合金铸造。1909年是美国第16任总统亚伯拉罕·林肯诞生100周年，所以硬币表面（obverse）设计时选择了林肯的人头像，并铸有IN GOD WE TRUST（我们信仰上帝）及LIBERTY（自由）的字样；硬币的背面（reverse）铸有金额及UNITED STATES OF AMERICA（美利坚合众国）的字样。硬币的背面在1959年以前是文本ONE CENT和UNITED STATES OF AMERICA，1959年以后改为了林肯纪念堂。

The United States one-cent coin, commonly known as a penny, is a unit of currency equaling one-hundredth of a United States dollar. The cent's symbol is ¢. Its obverse has featured the profile of President Abraham Lincoln since 1909, the centennial of his birth. From 1959 (the sesquicentennial of Lincoln's birth) to 2008, the reverse featured the Lincoln Memorial. Four different reverse designs in 2009 honored Lincoln's 200th birthday and a new, "permanent" reverse – the Union Shield – was introduced in 2010. The coin is 0.75 inches (19.05 mm) in diameter and 0.0598 inches (1.52 mm) in thickness. Its weight has varied, depending upon the composition of metals used in its production (see further below).