What was the name of the first American national flag adopted by the Continental Congress in 1777?

The first American national flag adopted by the Continental Congress in 1777 was the Stars and Stripes.

Congress passed the Flag Resolution on June 14, 1777. It specified thirteen alternating red and white stripes and thirteen white stars on a blue field, representing the thirteen states. The resolution did not prescribe the stars' arrangement or establish a detailed manufacturing pattern.

The flag replaced the Grand Union Flag, which had combined the British Union Jack with thirteen stripes and had been used earlier by the Continental forces. The new design expressed the colonies' transformation into independent states.

The popular story that Betsy Ross made the first flag is not supported by firm contemporary evidence. Francis Hopkinson, a New Jersey delegate and designer, later claimed to have designed the flag, but Congress never formally credited a single designer. The phrase “Stars and Stripes” became a common name for the national flag, while later laws changed the number of stars as new states joined the Union.