Estadísticas del jugador contra cada club rival
| Equipo | PJ | V | E | D | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Bangor City | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 SJK | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 ÍA | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Víkingur Ólafsvík | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
 Inter | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Maccabi Tel Aviv | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 FC Augsburg | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Molde | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Lech Poznań | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Viking | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Vålerenga | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Rosenborg | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Lillestrøm | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Start | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Rot-Weiß Oberhausen | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Fylkir | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Fram | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Breidablik | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Tromsø | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 KR Reykjavík | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Gardar Johannsson ha marcado 7 goles en 41 partidos profesionales en 4 clubes. Entre los clubes por los que ha pasado — KR Reykjavík, Strømsgodset, Hansa Rostock, Fredrikstad — Gardar Johannsson fue más prolífico en el Fredrikstad, donde anotó 3 goles en 13 partidos.
