According to the Food and Agriculture Organization (FAO) of the United Nations, the most popular meat eaten in the world is chicken. In 2020, global chicken meat production reached 122 million metric tons, accounting for about 35% of the world's total meat production.

Here is the ranking of the most popular meats...

1. Chicken: 122 million metric tons (35% of total meat production)
2. Pork: 114 million metric tons (32% of total meat production)
3. Beef: 63 million metric tons (18% of total meat production)
4. Lamb and mutton: 12 million metric tons (3% of total meat production)
5. Goat meat: 10 million metric tons (3% of total meat production)

It's worth noting that the popularity of different meats can vary significantly across different regions and cultures. For example, beef is a staple in many Western countries, while pork is more popular in Asia. Chicken is widely consumed in many parts of the world, but its popularity can vary depending on the region and cultural context.