ATP Oslo Open

{{Infobox tennis tournament

|name = Oslo Open

|type = defunct

|event name = Oslo Open

|tour = Grand Prix circuit

|founded = 1974

|ended = 1974

|editions = 1

|location = Oslo, Norway

|surface = Hard / indoor

|website =

}}

The Oslo Open is a defunct men's tennis tournament that was played on the Grand Prix tennis circuit in 1974. The event was held in Oslo, Norway and played on indoor hard courts. Jeff Borowiak won the singles title while Karl Meiler and Haroon Rahim partnered to win the doubles title.{{cite book|title=World of Tennis '75 : a BP and Commercial Union yearbook|year=1975|publisher=Queen Anne Press|location=London|isbn=9780362002171|page=130|editor=John Barrett}}{{cite web |title=1974 Oslo – Singles draw |url=https://www.atptour.com/en/scores/archive/oslo/2033/1974/draws?matchtype=singles |publisher=Association of Tennis Professionals (ATP)}}{{cite web |title=1974 Oslo – Doubles draw |url=https://www.atptour.com/en/scores/archive/oslo/2033/1974/draws?matchtype=doubles|publisher=Association of Tennis Professionals (ATP)}}

Finals

=Singles=

class="wikitable"
Year !width="200"\|Champion !width="200"\|Runner-up !width="125"\|Score
1974	{{flagicon\|USA}} Jeff Borowiak	{{flagicon\|GER}} Karl Meiler	6–3, 6–2

class="wikitable"

Year

!width="200"|Champion

!width="200"|Runner-up

!width="125"|Score

1974

{{flagicon|USA}} Jeff Borowiak

{{flagicon|GER}} Karl Meiler

6–3, 6–2

=Doubles=

class="wikitable"
Year !width="200"\|Champion !width="200"\|Runner-up !width="125"\|Score
1974	{{flagicon\|GER}} Karl Meiler {{flagicon\|PAK}} Haroon Rahim	{{flagicon\|USA}} Jeff Borowiak {{flagicon\|USA}} Vitas Gerulaitis	6–3, 6–2