波达计数法（Borda Count）是一种投票制度。投票人按喜好排列候选者。如果候选者在选票的排第一位，它就得某个分数；排第二位得一个较小的分数……如此类推。分数累计下来最高分的候选者便取胜。

历史上有许多人曾提出使用波达计数法。它曾是罗马议会采用的投票制度之一。13世纪的雷蒙·卢尔和15世纪的库萨的尼可拉都曾提出这个制度。1770年，让-查理斯·波达（Jean-Charles de Borda）提出用此法来选举法国科学院（Académie des sciences），后来便以其名字来命名此计数法。

The Borda count is a single-winner election method in which voters rank options or candidates in order of preference. The Borda count determines the outcome of a debate or the winner of an election by giving each candidate, for each ballot, a number of points corresponding to the number of candidates ranked lower. Once all votes have been counted the option or candidate with the most points is the winner. Because it sometimes elects broadly acceptable options or candidates, rather than those preferred by a majority, the Borda count is often described as a consensus-based voting system rather than a majoritarian one.