Namesakes
Norwegian Kings and Queens:
8 kings, 2 regents
King Håkon I the Good (a.k.a. Haakon) 934-961 
Regent Håkon II Sigurdarson (a.k.a. Haakon) 970-995
Regent Håkon Eiriksson (a.k.a. Haakon) 1028-1029
King Håkon (a.k.a. Haakon) 1093-1094
King Håkon II the Broadshouldered (a.k.a. Haakon) 1157-1162
King Håkon III (a.k.a. Haakon) 1202-1204
King Håkon IV the Old (a.k.a. Haakon) 1217-1263
King Håkon V (a.k.a. Haakon) 1299-1319
King Håkon VI (a.k.a. Haakon) 1343-1380
King Haakon VII 1905-1957
Other Royalty:
1 prince
Haakon Magnus, Crown Prince of Norway 1973- Norway
Swedish Kings and Queens:
1 king
King Håkan the Red (a.k.a. Haakon) 1070-1079