- 低地国 dīdìguó the Low Countriesthe Netherlands, so called because a large portion of its land is low-lying and below sea level, much of it having been reclaimed from the sea and protected by dikes
- 低地绣眼鸟 dīdìxiùyǎnniǎo lowland white-eye(bird species of China) lowland white-eye (Zosterops meyeni)
- 低地轨道 dīdìguǐdào low Earth orbitlow Earth orbit; often abbreviated as LEO