diff --git a/src/mpi/f77/comm_compare_f.c b/src/mpi/f77/comm_compare_f.c
index f3ca18f7e1..1a7a214b5f 100644
--- a/src/mpi/f77/comm_compare_f.c
+++ b/src/mpi/f77/comm_compare_f.c
@@ -48,5 +48,8 @@ OMPI_GENERATE_F77_BINDINGS (MPI_COMM_COMPARE,
 
 void mpi_comm_compare_f(MPI_Fint *comm1, MPI_Fint *comm2, MPI_Fint *result, MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Comm c_comm1 = MPI_Comm_f2c ( *comm1 );
+    MPI_Comm c_comm2 = MPI_Comm_f2c ( *comm2 );
+
+    *ierr = MPI_Comm_compare ( c_comm1, c_comm2, result );
 }
diff --git a/src/mpi/f77/comm_create_f.c b/src/mpi/f77/comm_create_f.c
index 1fa4d0fc60..984b1a22a3 100644
--- a/src/mpi/f77/comm_create_f.c
+++ b/src/mpi/f77/comm_create_f.c
@@ -48,5 +48,10 @@ OMPI_GENERATE_F77_BINDINGS (MPI_COMM_CREATE,
 
 void mpi_comm_create_f(MPI_Fint *comm, MPI_Fint *group, MPI_Fint *newcomm, MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Comm c_newcomm;
+    MPI_Comm c_comm = MPI_Comm_f2c (*comm);
+    MPI_Group c_group = MPI_Group_f2c(*group);
+
+    *ierr = MPI_Comm_create (c_comm, c_group, &c_newcomm);
+    *newcomm = MPI_Comm_c2f (c_newcomm);
 }
diff --git a/src/mpi/f77/comm_dup_f.c b/src/mpi/f77/comm_dup_f.c
index f17b925370..f3796740ca 100644
--- a/src/mpi/f77/comm_dup_f.c
+++ b/src/mpi/f77/comm_dup_f.c
@@ -48,5 +48,9 @@ OMPI_GENERATE_F77_BINDINGS (MPI_COMM_DUP,
 
 void mpi_comm_dup_f(MPI_Fint *comm, MPI_Fint *newcomm, MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Comm c_newcomm;
+    MPI_Comm c_comm = MPI_Comm_f2c( *comm );
+    
+    *ierr = MPI_Comm_dup ( c_comm, &c_newcomm );
+    *newcomm = MPI_Comm_c2f (c_newcomm);
 }
diff --git a/src/mpi/f77/comm_free_f.c b/src/mpi/f77/comm_free_f.c
index f89bf12ee3..9787748027 100644
--- a/src/mpi/f77/comm_free_f.c
+++ b/src/mpi/f77/comm_free_f.c
@@ -48,5 +48,8 @@ OMPI_GENERATE_F77_BINDINGS (MPI_COMM_FREE,
 
 void mpi_comm_free_f(MPI_Fint *comm, MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Comm c_comm = MPI_Comm_f2c (*comm);
+
+    *ierr = MPI_Comm_free ( &c_comm );
+    *comm = MPI_Comm_c2f (c_comm);
 }
diff --git a/src/mpi/f77/comm_group_f.c b/src/mpi/f77/comm_group_f.c
index f0b83c54d7..e1052feccb 100644
--- a/src/mpi/f77/comm_group_f.c
+++ b/src/mpi/f77/comm_group_f.c
@@ -48,5 +48,9 @@ OMPI_GENERATE_F77_BINDINGS (MPI_COMM_GROUP,
 
 void mpi_comm_group_f(MPI_Fint *comm, MPI_Fint *group, MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Group c_group;
+    MPI_Comm c_comm = MPI_Comm_f2c( *comm );
+    
+    *ierr = MPI_Comm_group( c_comm, &c_group);
+    *group = MPI_Group_c2f (c_group);
 }
diff --git a/src/mpi/f77/comm_remote_group_f.c b/src/mpi/f77/comm_remote_group_f.c
index e065562657..35a5eb5ebb 100644
--- a/src/mpi/f77/comm_remote_group_f.c
+++ b/src/mpi/f77/comm_remote_group_f.c
@@ -48,5 +48,9 @@ OMPI_GENERATE_F77_BINDINGS (MPI_COMM_REMOTE_GROUP,
 
 void mpi_comm_remote_group_f(MPI_Fint *comm, MPI_Fint *group, MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Group c_group;
+    MPI_Comm c_comm = MPI_Comm_f2c ( *comm );
+
+    *ierr = MPI_Comm_remote_group ( c_comm, &c_group );
+    *group = MPI_Group_c2f (c_group);
 }
diff --git a/src/mpi/f77/comm_remote_size_f.c b/src/mpi/f77/comm_remote_size_f.c
index f8f7ab709a..3c6b3345ba 100644
--- a/src/mpi/f77/comm_remote_size_f.c
+++ b/src/mpi/f77/comm_remote_size_f.c
@@ -48,5 +48,7 @@ OMPI_GENERATE_F77_BINDINGS (MPI_COMM_REMOTE_SIZE,
 
 void mpi_comm_remote_size_f(MPI_Fint *comm, MPI_Fint *size, MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Comm c_comm = MPI_Comm_f2c ( *comm );
+
+    *ierr = MPI_Comm_remote_size ( c_comm, size );
 }
diff --git a/src/mpi/f77/comm_split_f.c b/src/mpi/f77/comm_split_f.c
index 8f90cf3161..341cdbce31 100644
--- a/src/mpi/f77/comm_split_f.c
+++ b/src/mpi/f77/comm_split_f.c
@@ -46,7 +46,12 @@ OMPI_GENERATE_F77_BINDINGS (MPI_COMM_SPLIT,
 #include "mpi/f77/profile/defines.h"
 #endif
 
-void mpi_comm_split_f(MPI_Fint *comm, MPI_Fint *color, MPI_Fint *key, MPI_Fint *newcomm, MPI_Fint *ierr)
+void mpi_comm_split_f(MPI_Fint *comm, MPI_Fint *color, MPI_Fint *key, MPI_Fint *newcomm, 
+                      MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Comm c_newcomm;
+    MPI_Comm c_comm = MPI_Comm_f2c ( *comm );
+
+    *ierr = MPI_Comm_split ( c_comm, (int) color, (int) key, &c_newcomm );
+    *newcomm = MPI_Comm_c2f (c_newcomm);
 }
diff --git a/src/mpi/f77/comm_test_inter_f.c b/src/mpi/f77/comm_test_inter_f.c
index 23a83f412c..609bc70b3a 100644
--- a/src/mpi/f77/comm_test_inter_f.c
+++ b/src/mpi/f77/comm_test_inter_f.c
@@ -48,5 +48,7 @@ OMPI_GENERATE_F77_BINDINGS (MPI_COMM_TEST_INTER,
 
 void mpi_comm_test_inter_f(MPI_Fint *comm, MPI_Fint *flag, MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Comm c_comm = MPI_Comm_f2c ( *comm );
+
+    *ierr = MPI_Comm_test_inter ( c_comm, flag );
 }
diff --git a/src/mpi/f77/intercomm_create_f.c b/src/mpi/f77/intercomm_create_f.c
index 789a5ed0ee..4323f2c2bc 100644
--- a/src/mpi/f77/intercomm_create_f.c
+++ b/src/mpi/f77/intercomm_create_f.c
@@ -46,7 +46,15 @@ OMPI_GENERATE_F77_BINDINGS (MPI_INTERCOMM_CREATE,
 #include "mpi/f77/profile/defines.h"
 #endif
 
-void mpi_intercomm_create_f(MPI_Fint *local_comm, MPI_Fint *local_leader, MPI_Fint *bridge_comm, MPI_Fint *remote_leader, MPI_Fint *tag, MPI_Fint *newintercomm, MPI_Fint *ierr)
+void mpi_intercomm_create_f(MPI_Fint *local_comm, MPI_Fint *local_leader, MPI_Fint *bridge_comm, 
+                            MPI_Fint *remote_leader, MPI_Fint *tag, MPI_Fint *newintercomm, 
+                            MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Comm c_newcomm;
+    MPI_Comm c_local_comm = MPI_Comm_f2c (*local_comm );
+    MPI_Comm c_bridge_comm = MPI_Comm_f2c (*bridge_comm);
+
+    *ierr = MPI_Intercomm_create ( c_local_comm, (int) *local_leader, c_bridge_comm,
+                                   (int) *remote_leader, (int) *tag, &c_newcomm );
+    *newintercomm = MPI_Comm_c2f (c_newcomm);
 }
diff --git a/src/mpi/f77/intercomm_merge_f.c b/src/mpi/f77/intercomm_merge_f.c
index c71393f145..ba1d264bf6 100644
--- a/src/mpi/f77/intercomm_merge_f.c
+++ b/src/mpi/f77/intercomm_merge_f.c
@@ -46,7 +46,12 @@ OMPI_GENERATE_F77_BINDINGS (MPI_INTERCOMM_MERGE,
 #include "mpi/f77/profile/defines.h"
 #endif
 
-void mpi_intercomm_merge_f(MPI_Fint *intercomm, MPI_Fint *high, MPI_Fint *newintercomm, MPI_Fint *ierr)
+void mpi_intercomm_merge_f(MPI_Fint *intercomm, MPI_Fint *high, MPI_Fint *newintracomm, 
+                           MPI_Fint *ierr)
 {
-  /* This function not yet implemented */
+    MPI_Comm c_newcomm;
+    MPI_Comm c_intercomm = MPI_Comm_f2c(*intercomm);
+
+    *ierr = MPI_Intercomm_merge (c_intercomm, (int) *high, &c_newcomm );
+    *newintracomm = MPI_Comm_c2f (c_newcomm);
 }