Category:1999–2000 in European rugby union by country

• 1999–2000 in British rugby union (3 C, 1 P)

E

• 1999–2000 in English rugby union (5 C, 14 P)

F

• 1999–2000 in French rugby union (4 C, 10 P)

G

• 1999–2000 in German rugby union (1 P)

I

• 1999–2000 in Irish rugby union (4 C, 11 P)
• 1999–2000 in Italian rugby union (3 C, 6 P)

R

• 1999–2000 in Romanian rugby union (1 C, 3 P)
• 1999 in Russian rugby union (1 P)
• 2000 in Russian rugby union (1 P)

S

• 1999–2000 in Scottish rugby union (3 C, 12 P)
• 1999–2000 in Spanish rugby union (1 C, 4 P)

W

• 1999–2000 in Welsh rugby union (4 C, 9 P)