diff --git a/mercurial/templatekw.py b/mercurial/templatekw.py
--- a/mercurial/templatekw.py
+++ b/mercurial/templatekw.py
@@ -275,6 +275,28 @@ def shownode(repo, ctx, templ, **args):
     """
     return ctx.hex()
 
+def showp1rev(repo, ctx, templ, **args):
+    """:p1rev: Integer. The repository-local revision number of the changeset's
+    first parent, or -1 if the changeset has no parents."""
+    return ctx.p1().rev()
+
+def showp2rev(repo, ctx, templ, **args):
+    """:p2rev: Integer. The repository-local revision number of the changeset's
+    second parent, or -1 if the changeset has no second parent."""
+    return ctx.p2().rev()
+
+def showp1node(repo, ctx, templ, **args):
+    """:p1node: String. The identification hash of the changeset's first parent,
+    as a 40 digit hexadecimal string. If the changeset has no parents, all
+    digits are 0."""
+    return ctx.p1().hex()
+
+def showp2node(repo, ctx, templ, **args):
+    """:p2node: String. The identification hash of the changeset's second
+    parent, as a 40 digit hexadecimal string. If the changeset has no second
+    parent, all digits are 0."""
+    return ctx.p2().hex()
+
 def showphase(repo, ctx, templ, **args):
     """:phase: String. The changeset phase name."""
     return ctx.phasestr()
@@ -320,6 +342,10 @@ keywords = {
     'latesttagdistance': showlatesttagdistance,
     'manifest': showmanifest,
     'node': shownode,
+    'p1rev': showp1rev,
+    'p1node': showp1node,
+    'p2rev': showp2rev,
+    'p2node': showp2node,
     'phase': showphase,
     'phaseidx': showphaseidx,
     'rev': showrev,
diff --git a/tests/test-command-template.t b/tests/test-command-template.t
--- a/tests/test-command-template.t
+++ b/tests/test-command-template.t
@@ -592,7 +592,8 @@ Keys work:
 
   $ for key in author branch branches date desc file_adds file_dels file_mods \
   >         file_copies file_copies_switch files \
-  >         manifest node parents rev tags diffstat extras; do
+  >         manifest node parents rev tags diffstat extras \
+  >         p1rev p2rev p1node p2node; do
   >     for mode in '' --verbose --debug; do
   >         hg log $mode --template "$key$mode: {$key}\n"
   >     done
@@ -1095,7 +1096,114 @@ Keys work:
   extras--debug: branch=default
   extras--debug: branch=default
   extras--debug: branch=default
-
+  p1rev: 7
+  p1rev: -1
+  p1rev: 5
+  p1rev: 3
+  p1rev: 3
+  p1rev: 2
+  p1rev: 1
+  p1rev: 0
+  p1rev: -1
+  p1rev--verbose: 7
+  p1rev--verbose: -1
+  p1rev--verbose: 5
+  p1rev--verbose: 3
+  p1rev--verbose: 3
+  p1rev--verbose: 2
+  p1rev--verbose: 1
+  p1rev--verbose: 0
+  p1rev--verbose: -1
+  p1rev--debug: 7
+  p1rev--debug: -1
+  p1rev--debug: 5
+  p1rev--debug: 3
+  p1rev--debug: 3
+  p1rev--debug: 2
+  p1rev--debug: 1
+  p1rev--debug: 0
+  p1rev--debug: -1
+  p2rev: -1
+  p2rev: -1
+  p2rev: 4
+  p2rev: -1
+  p2rev: -1
+  p2rev: -1
+  p2rev: -1
+  p2rev: -1
+  p2rev: -1
+  p2rev--verbose: -1
+  p2rev--verbose: -1
+  p2rev--verbose: 4
+  p2rev--verbose: -1
+  p2rev--verbose: -1
+  p2rev--verbose: -1
+  p2rev--verbose: -1
+  p2rev--verbose: -1
+  p2rev--verbose: -1
+  p2rev--debug: -1
+  p2rev--debug: -1
+  p2rev--debug: 4
+  p2rev--debug: -1
+  p2rev--debug: -1
+  p2rev--debug: -1
+  p2rev--debug: -1
+  p2rev--debug: -1
+  p2rev--debug: -1
+  p1node: 29114dbae42b9f078cf2714dbe3a86bba8ec7453
+  p1node: 0000000000000000000000000000000000000000
+  p1node: 13207e5a10d9fd28ec424934298e176197f2c67f
+  p1node: 10e46f2dcbf4823578cf180f33ecf0b957964c47
+  p1node: 10e46f2dcbf4823578cf180f33ecf0b957964c47
+  p1node: 97054abb4ab824450e9164180baf491ae0078465
+  p1node: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
+  p1node: 1e4e1b8f71e05681d422154f5421e385fec3454f
+  p1node: 0000000000000000000000000000000000000000
+  p1node--verbose: 29114dbae42b9f078cf2714dbe3a86bba8ec7453
+  p1node--verbose: 0000000000000000000000000000000000000000
+  p1node--verbose: 13207e5a10d9fd28ec424934298e176197f2c67f
+  p1node--verbose: 10e46f2dcbf4823578cf180f33ecf0b957964c47
+  p1node--verbose: 10e46f2dcbf4823578cf180f33ecf0b957964c47
+  p1node--verbose: 97054abb4ab824450e9164180baf491ae0078465
+  p1node--verbose: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
+  p1node--verbose: 1e4e1b8f71e05681d422154f5421e385fec3454f
+  p1node--verbose: 0000000000000000000000000000000000000000
+  p1node--debug: 29114dbae42b9f078cf2714dbe3a86bba8ec7453
+  p1node--debug: 0000000000000000000000000000000000000000
+  p1node--debug: 13207e5a10d9fd28ec424934298e176197f2c67f
+  p1node--debug: 10e46f2dcbf4823578cf180f33ecf0b957964c47
+  p1node--debug: 10e46f2dcbf4823578cf180f33ecf0b957964c47
+  p1node--debug: 97054abb4ab824450e9164180baf491ae0078465
+  p1node--debug: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
+  p1node--debug: 1e4e1b8f71e05681d422154f5421e385fec3454f
+  p1node--debug: 0000000000000000000000000000000000000000
+  p2node: 0000000000000000000000000000000000000000
+  p2node: 0000000000000000000000000000000000000000
+  p2node: bbe44766e73d5f11ed2177f1838de10c53ef3e74
+  p2node: 0000000000000000000000000000000000000000
+  p2node: 0000000000000000000000000000000000000000
+  p2node: 0000000000000000000000000000000000000000
+  p2node: 0000000000000000000000000000000000000000
+  p2node: 0000000000000000000000000000000000000000
+  p2node: 0000000000000000000000000000000000000000
+  p2node--verbose: 0000000000000000000000000000000000000000
+  p2node--verbose: 0000000000000000000000000000000000000000
+  p2node--verbose: bbe44766e73d5f11ed2177f1838de10c53ef3e74
+  p2node--verbose: 0000000000000000000000000000000000000000
+  p2node--verbose: 0000000000000000000000000000000000000000
+  p2node--verbose: 0000000000000000000000000000000000000000
+  p2node--verbose: 0000000000000000000000000000000000000000
+  p2node--verbose: 0000000000000000000000000000000000000000
+  p2node--verbose: 0000000000000000000000000000000000000000
+  p2node--debug: 0000000000000000000000000000000000000000
+  p2node--debug: 0000000000000000000000000000000000000000
+  p2node--debug: bbe44766e73d5f11ed2177f1838de10c53ef3e74
+  p2node--debug: 0000000000000000000000000000000000000000
+  p2node--debug: 0000000000000000000000000000000000000000
+  p2node--debug: 0000000000000000000000000000000000000000
+  p2node--debug: 0000000000000000000000000000000000000000
+  p2node--debug: 0000000000000000000000000000000000000000
+  p2node--debug: 0000000000000000000000000000000000000000
 
 Filters work: