Which African national flag uses a Pan-African tricolor with a blue disk and yellow pentagram? Ethiopia. Its flag combines green, yellow and red horizontal bands with a blue disk carrying a yellow pentagram and radiating rays.
The green, yellow and red combination is widely known as the Pan-African colors. These colors draw heavily on Ethiopia's historical independence and became especially influential after many African countries gained independence from European colonial rule. Ethiopia's victory over Italy at the Battle of Adwa in 1896 strengthened its status as a symbol of African sovereignty.
The modern Ethiopian tricolor was adopted in 1897 under Emperor Menelik II, although the order of the bands changed over time. The current flag's emblem was introduced in 1996 and modified in 2009. The pentagram represents unity and the common identity of Ethiopia's peoples, while the surrounding rays express equality.
Cameroon and Senegal also use green, yellow and red, but neither has Ethiopia's blue disk and yellow pentagram. Ghana's flag likewise uses Pan-African colors, yet its central symbol is a black star on the yellow band.