diff --git a/install.sh b/install.sh
index b055eee..68c9627 100755
--- a/install.sh
+++ b/install.sh
@@ -6,6 +6,10 @@ nvm_has() {
   type "$1" > /dev/null 2>&1
 }
 
+nvm_has_http_proxy() {
+  [ "$NVM_HTTP_PROXY" != '' ]
+}
+
 if [ -z "$NVM_DIR" ]; then
   NVM_DIR="$HOME/.nvm"
 fi
@@ -42,7 +46,11 @@ nvm_source() {
 
 nvm_download() {
   if nvm_has "curl"; then
-    curl -q $*
+    if nvm_has_http_proxy; then
+      curl -q -x $NVM_HTTP_PROXY $*
+    else
+      curl -q $*
+    fi
   elif nvm_has "wget"; then
     # Emulate curl with wget
     ARGS=$(echo "$*" | command sed -e 's/--progress-bar /--progress=bar /' \
@@ -51,7 +59,11 @@ nvm_download() {
                            -e 's/-s /-q /' \
                            -e 's/-o /-O /' \
                            -e 's/-C - /-c /')
-    wget $ARGS
+    if nvm_has_http_proxy; then
+      eval wget -e use_proxy=yes -e http_proxy=$NVM_HTTP_PROXY $ARGS
+    else
+      eval wget $ARGS
+    fi
   fi
 }
 
@@ -229,7 +241,11 @@ nvm_do_install() {
   local NVM_PROFILE
   NVM_PROFILE=$(nvm_detect_profile)
 
-  SOURCE_STR="\nexport NVM_DIR=\"$NVM_DIR\"\n[ -s \"\$NVM_DIR/nvm.sh\" ] && . \"\$NVM_DIR/nvm.sh\"  # This loads nvm"
+  if nvm_has_http_proxy; then
+    SOURCE_STR="\nexport NVM_HTTP_PROXY=$NVM_HTTP_PROXY\nexport NVM_DIR=\"$NVM_DIR\"\n[ -s \"\$NVM_DIR/nvm.sh\" ] && . \"\$NVM_DIR/nvm.sh\"  # This loads nvm"
+  else
+    SOURCE_STR="\nexport NVM_DIR=\"$NVM_DIR\"\n[ -s \"\$NVM_DIR/nvm.sh\" ] && . \"\$NVM_DIR/nvm.sh\"  # This loads nvm"
+  fi
 
   if [ -z "$NVM_PROFILE" ] ; then
     echo "=> Profile not found. Tried $NVM_PROFILE (as defined in \$PROFILE), ~/.bashrc, ~/.bash_profile, ~/.zshrc, and ~/.profile."
diff --git a/nvm.sh b/nvm.sh
index 9980515..797d7b4 100755
--- a/nvm.sh
+++ b/nvm.sh
@@ -22,9 +22,17 @@ nvm_is_alias() {
 nvm_get_latest() {
   local NVM_LATEST_URL
   if nvm_has "curl"; then
-    NVM_LATEST_URL="$(curl -q -w "%{url_effective}\n" -L -s -S http://latest.nvm.sh -o /dev/null)"
+    if nvm_has_http_proxy; then
+      NVM_LATEST_URL="$(curl -q -x $NVM_HTTP_PROXY -w "%{url_effective}\n" -L -s -S http://latest.nvm.sh -o /dev/null)"
+    else
+      NVM_LATEST_URL="$(curl -q -w "%{url_effective}\n" -L -s -S http://latest.nvm.sh -o /dev/null)"
+    fi
   elif nvm_has "wget"; then
-    NVM_LATEST_URL="$(wget http://latest.nvm.sh --server-response -O /dev/null 2>&1 | command awk '/^  Location: /{DEST=$2} END{ print DEST }')"
+    if nvm_has_http_proxy; then
+      NVM_LATEST_URL="$(wget http://latest.nvm.sh -e use_proxy=yes -e http_proxy=$NVM_HTTP_PROXY --server-response -O /dev/null 2>&1 | command awk '/^  Location: /{DEST=$2} END{ print DEST }')"
+    else
+      NVM_LATEST_URL="$(wget http://latest.nvm.sh --server-response -O /dev/null 2>&1 | command awk '/^  Location: /{DEST=$2} END{ print DEST }')"
+    fi
   else
     >&2 echo 'nvm needs curl or wget to proceed.'
     return 1
@@ -39,7 +47,11 @@ nvm_get_latest() {
 
 nvm_download() {
   if nvm_has "curl"; then
-    curl -q $*
+    if nvm_has_http_proxy; then
+      curl -q -x $NVM_HTTP_PROXY $*
+    else
+      curl -q $*
+    fi
   elif nvm_has "wget"; then
     # Emulate curl with wget
     ARGS=$(echo "$*" | command sed -e 's/--progress-bar /--progress=bar /' \
@@ -48,7 +60,11 @@ nvm_download() {
                            -e 's/-s /-q /' \
                            -e 's/-o /-O /' \
                            -e 's/-C - /-c /')
-    eval wget $ARGS
+    if nvm_has_http_proxy; then
+      eval wget -e use_proxy=yes -e http_proxy=$NVM_HTTP_PROXY $ARGS
+    else
+      eval wget $ARGS
+    fi
   fi
 }
 
@@ -60,6 +76,10 @@ nvm_has_system_iojs() {
   [ "$(nvm deactivate >/dev/null 2>&1 && command -v iojs)" != '' ]
 }
 
+nvm_has_http_proxy() {
+  [ "$NVM_HTTP_PROXY" != '' ]
+}
+
 nvm_print_npm_version() {
   if nvm_has "npm"; then
     echo " (npm v$(npm --version 2>/dev/null))"
diff --git a/test/fast/Unit tests/nvm_has_http_proxy b/test/fast/Unit tests/nvm_has_http_proxy
new file mode 100755
index 0000000..1584484
--- /dev/null
+++ b/test/fast/Unit tests/nvm_has_http_proxy	
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+die () { echo $@ ; exit 1; }
+
+. ../../../nvm.sh
+
+! nvm_has_http_proxy || die 'nvm_has_http_proxy: no http_proxy defined'
+
+NVM_HTTP_PROXY=127.0.0.1:1234
+nvm_has_http_proxy || die 'nvm_has_http_proxy: http_proxy defined'