diff --git a/tools/valgrind/MPICH.supp b/tools/valgrind/MPICH.supp
new file mode 100644
index 0000000000..6934cf8fbd
--- /dev/null
+++ b/tools/valgrind/MPICH.supp
@@ -0,0 +1,41 @@
+{
+   MPICH_MPI_init1
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   fun:malloc
+   obj:*
+   ...
+   fun:psm3_init
+   ...
+   fun:MPIDI_OFI_init_local
+   ...
+   fun:PMPI_Init
+   fun:main
+}
+{
+   MPICH_MPI_init2
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   fun:malloc
+   fun:strdup
+   obj:*
+   ...
+   fun:fi_ini
+   ...
+   fun:MPIDI_OFI_init_local
+   ...
+   fun:PMPI_Init
+   fun:main
+}
+{
+   MPICH_MPI_init3
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   fun:calloc
+   obj:*
+   ...
+   fun:MPIDI_OFI_init_local
+   ...
+   fun:PMPI_Init
+   fun:main
+}
diff --git a/tools/valgrind/README b/tools/valgrind/README
index 63c440f7b2..e62031da9b 100644
--- a/tools/valgrind/README
+++ b/tools/valgrind/README
@@ -8,6 +8,7 @@ on running LAMMPS, use a command line like following:
 valgrind --show-leak-kinds=all --track-origins=yes \
    --suppressions=/path/to/lammps/tools/valgrind/OpenMP.supp \
    --suppressions=/path/to/lammps/tools/valgrind/OpenMPI.supp \
+   --suppressions=/path/to/lammps/tools/valgrind/MPICH.supp \
    --suppressions=/path/to/lammps/tools/valgrind/Python3.supp \
    --suppressions=/path/to/lammps/tools/valgrind/GTest.supp \
    --suppressions=/path/to/lammps/tools/valgrind/FlexiBLAS.supp \