Marius Visser

{{short description|Namibia international rugby union player}}

{{Use dmy dates|date=September 2023}}

{{infobox Rugby biography

| image =

| image_size =

| birthname =

| birth_date = {{birth date and age|df=yes|1982|4|24}}

| birth_place =

| height = {{height|ft=6|in=3}}

| weight = {{convert|286|lb|kg st|abbr=on}}

| ru_position = Prop

| amatyears1 =

| amatteam1 =

| years1 =

| clubs1 =

| apps1 =

| points1 =

| repyears1 = 2007–2011

| repteam1 ={{nrut|Namibia}}

| repcaps1 = 18

| reppoints1 = 5

}}

Marius Visser (born 24 April 1982 in Walvis Bay) is a rugby union player for Namibia and the heaviest player at the 2007 Rugby World Cup at 140 kilograms. While due to play for the Lyon team subsequent to the World Cup, he retired after the discovery of irreversible spinal problems.http://www.namibianrugby.com/ World Cup prop's career ended

In 2009, he returned to the Namibian national team, apparently able to continue playing after earlier worries that injury ended his career.{{fact|date=September 2023}}