CA or ca may refer to:
Canada (/ˈkænədə/; French: [ka.na.dɑ]) is a country in the northern part of North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering 9.98 million square kilometres (3.85 million square miles), making it the world's second-largest country by total area and the fourth-largest country by land area.
California (/ˌkælᵻˈfɔːrnjə, -ni.ə/ KAL-ə-FORN-yə, KAL-ə-FORN-ee-ə) is the most populous state in the United States and the third most extensive by area.
The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with more than 1.28 billion members worldwide.
Caitlyn Marie Jenner (born October 28, 1949), formerly known as Bruce Jenner, is an American television personality and retired Olympic gold medal-winning decathlete.
Call of Duty is a first-person shooter video game franchise. The series began on Microsoft Windows, and later expanded to consoles and handhelds.
The domestic cat (Latin: Felis catus) is a small, typically furry, carnivorous mammal. They are often called house cats when kept as indoor pets or simply cats when there is no need to distinguish them from other felids and felines.
An electronic calculator is a small, portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.