diff --git a/doc/xschem_man/developer_info.html b/doc/xschem_man/developer_info.html
index 3fdea1c7..0b8acef1 100644
--- a/doc/xschem_man/developer_info.html
+++ b/doc/xschem_man/developer_info.html
@@ -922,6 +922,8 @@ C {verilog_timescale.sym} 1050 -100 0 0 {name=s1 timestep="1ns" precision="1ns"
    20221014_091945  {/home/.../ngspice/comp_ngspice.sch}</pre>
    <li><kbd>       list_hilights [sep]</kbd></li><pre>
     Sorted list of highlight nets, separated by character 'sep' (default: space) </pre>
+   <li><kbd>       list_nets</kbd></li><pre>
+    List all nets with type (in / out / inout / net) </pre>
    <li><kbd>       list_tokens str with_quotes</kbd></li><pre>
    List tokens in string 'str'
    with_quotes:
diff --git a/src/node_hash.c b/src/node_hash.c
index 0c1b7429..3b27f010 100644
--- a/src/node_hash.c
+++ b/src/node_hash.c
@@ -367,3 +367,33 @@ void print_verilog_signals(FILE *fd)
   }
   if(found) fprintf(fd, "\n" );
 }
+
+void list_nets(char **result)
+{
+  Node_hashentry *ptr;
+  char *type = NULL;
+  int i;
+  int netlist_lvs_ignore=tclgetboolvar("lvs_ignore");
+
+  prepare_netlist_structs(1);
+  for(i = 0; i < xctx->instances; i++) {
+    if(skip_instance(i, 0, netlist_lvs_ignore)) continue;
+    my_strdup(_ALLOC_ID_, &type,(xctx->inst[i].ptr+ xctx->sym)->type);
+    if(type && xctx->inst[i].node && IS_PIN(type)) {
+      my_mstrcat(_ALLOC_ID_, result, 
+        "{", get_tok_value(xctx->inst[i].prop_ptr, "lab", 0), " ", type, "}\n", NULL);
+    }
+  }
+  if(type) my_free(_ALLOC_ID_, &type);
+  for(i=0;i<HASHSIZE; ++i) {
+    ptr = xctx->node_table[i];
+    while(ptr) {
+      if(!ptr->d.port) {
+        my_mstrcat(_ALLOC_ID_, result, 
+          "{", ptr->token, " ", "net", "}\n", NULL);
+      }
+      ptr = ptr->next;
+    }
+  }
+}
+
diff --git a/src/scheduler.c b/src/scheduler.c
index c537b5dd..2e0d2aed 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -2419,6 +2419,17 @@ int xschem(ClientData clientdata, Tcl_Interp *interp, int argc, const char * arg
       tclvareval("join [lsort -decreasing -dictionary {", tclresult(), "}] ", sep, NULL);
     }
 
+    /* list_nets
+     *    List all nets with type (in / out / inout / net) */
+    else if(!strcmp(argv[1], "list_nets"))
+    {
+      char *result = NULL;
+      if(!xctx) {Tcl_SetResult(interp, not_avail, TCL_STATIC); return TCL_ERROR;}
+      list_nets(&result);
+      Tcl_SetResult(interp, result, TCL_VOLATILE);
+      my_free(_ALLOC_ID_, &result);
+    }
+
     /* list_tokens str with_quotes
      *   List tokens in string 'str'
      *   with_quotes:
diff --git a/src/xschem.h b/src/xschem.h
index a80b8370..c10e40b5 100644
--- a/src/xschem.h
+++ b/src/xschem.h
@@ -1647,6 +1647,7 @@ extern void round_schematic_to_grid(double cadsnap);
 extern void save_selection(int what);
 extern void print_vhdl_signals(FILE *fd);
 extern void print_verilog_signals(FILE *fd);
+extern void list_nets(char **result);
 extern void print_generic(FILE *fd, char *ent_or_comp, int symbol);
 extern void print_verilog_param(FILE *fd, int symbol);
 extern void hilight_net(int to_waveform);