Nelson Cossio

{{Infobox football biography

| name = Nelson Cossio

| image =

| caption =

| fullname = Nelson Orlando Cossio Riquelme

| birth_date = {{Birth date and age|df=y|1966|6|14}}

| birth_place = Santiago, Chile

| currentclub =

| clubnumber =

| height = {{Height|m=1.83|precision=0}}

| position = Goalkeeper

| years1 = 1983–1992 | clubs1 = Palestino

| years2 = 1987 | clubs2 = → Soinca Bata (loan)

| years3 = 1988 | clubs3 = → Deportes Antofagasta (loan)

| years4 = 1989–1990 | clubs4 = → Soinca Bata (loan)

| years5 = 1993 | clubs5 = Everton

| years6 = 1994–1996 | clubs6 = Universidad de Chile

| years7 = 1996–1997 | clubs7 = Audax Italiano

| years8 = 1998 | clubs8 = Deportes Temuco

| years9 = 1999 | clubs9 = Deportes Iquique

| years10 = 2000 | clubs10 = Deportes Concepción

| years11 = 2001 | clubs11 = Unión Española

| years12 = 2001 | clubs12 = Deportes Arica

| years13 = 2002 | clubs13 = Universidad Católica

| nationalyears1 = 1997

| nationalteam1 = Chile

| nationalcaps1 = 4

| nationalgoals1 = 0

| manageryears1 = 2003–2004 | managerclubs1 = Naval

| manageryears2 = 2005 | managerclubs2 = O'Higgins

| manageryears3 = 2006–2008 | managerclubs3 = Deportes Copiapó

| manageryears4 = 2008 | managerclubs4 = Coquimbo Unido

| manageryears5 = 2009 | managerclubs5 = Deportes Copiapó

| manageryears6 = 2010 | managerclubs6 = Naval

| manageryears7 = 2010 | managerclubs7 = Deportes Copiapó

| manageryears8 = 2011 | managerclubs8 = Unión San Felipe

| manageryears9 = 2011 | managerclubs9 = San Luis

| manageryears10 = 2011–2012 | managerclubs10 = Unión San Felipe

| manageryears11 = 2012–2013 | managerclubs11 = Lota Schwager

| manageryears12 = 2013–2014 | managerclubs12 = Deportes Melipilla

| manageryears13 = 2014 | managerclubs13 = San Luis

| manageryears14 = 2014 | managerclubs14 = Lota Schwager

| manageryears15 = 2014–2016 | managerclubs15 = Deportes Melipilla

| manageryears16 = 2016 | managerclubs16 = Deportes Vallenar

| manageryears17 = 2017 | managerclubs17 = Provincial Osorno

| manageryears18 = 2018 | managerclubs18 = San Bernardo Unido

| manageryears19 = 2019 | managerclubs19 = Aguará

| manageryears20 = 2023- | managerclubs20 = Adriana Cousiño

}}

Nelson Orlando Cossio Riquelme (born 1966-06-14) is a retired football goalkeeper from Chile, who made his debut for the Chile national football team on 1997-01-04 in a friendly against Armenia. He obtained a total number of four caps during his professional career.