diff --git a/src/USER-DPD/fix_shardlow.cpp b/src/USER-DPD/fix_shardlow.cpp
index 39b7ba2224..2b7a69503a 100644
--- a/src/USER-DPD/fix_shardlow.cpp
+++ b/src/USER-DPD/fix_shardlow.cpp
@@ -529,7 +529,7 @@ while (ct-- > 0) {
 
 void FixShardlow::initial_integrate(int vflag)
 {
-  int i,ii,inum;
+  int ii;
   int *ilist;
 
   int nlocal = atom->nlocal;
@@ -592,9 +592,7 @@ void FixShardlow::initial_integrate(int vflag)
   // Allocate memory for v_t0 to hold the initial velocities for the ghosts
   v_t0 = (double (*)[3]) memory->smalloc(sizeof(double)*3*nghost, "FixShardlow:v_t0");
 
-  inum = list->inum;
   ilist = list->ilist;
-
   dtsqrt = sqrt(update->dt);
 
   // process neighbors in the local AIR
diff --git a/src/USER-DPD/npair_half_bin_newton_ssa.cpp b/src/USER-DPD/npair_half_bin_newton_ssa.cpp
index ce50f7603a..ba90ebc465 100644
--- a/src/USER-DPD/npair_half_bin_newton_ssa.cpp
+++ b/src/USER-DPD/npair_half_bin_newton_ssa.cpp
@@ -85,8 +85,6 @@ void NPairHalfBinNewtonSSA::build(NeighList *list)
   tagint *molecule = atom->molecule;
   tagint **special = atom->special;
   int **nspecial = atom->nspecial;
-  int nlocal = atom->nlocal;
-  if (includegroup) nlocal = atom->nfirst;
 
   int *molindex = atom->molindex;
   int *molatom = atom->molatom;
@@ -168,7 +166,7 @@ void NPairHalfBinNewtonSSA::build(NeighList *list)
     for (int subphase = 0; subphase < 4; subphase++) {
       int s_ybin = ybin + ((subphase & 0x2) ? ns_ssa->sy : 0);
       int s_xbin = xbin + ((subphase & 0x1) ? ns_ssa->sx : 0);
-      int ibin, ct;
+      int ibin;
 
       if ((s_ybin < lbinylo) || (s_ybin >= lbinyhi)) continue;
       if ((s_xbin < lbinxlo) || (s_xbin >= lbinxhi)) continue;
diff --git a/src/USER-OMP/npair_half_size_bin_newton_omp.cpp b/src/USER-OMP/npair_half_size_bin_newton_omp.cpp
index d8e1e6da44..1f0dca79ac 100644
--- a/src/USER-OMP/npair_half_size_bin_newton_omp.cpp
+++ b/src/USER-OMP/npair_half_size_bin_newton_omp.cpp
@@ -48,14 +48,13 @@ void NPairHalfSizeBinNewtonOmp::build(NeighList *list)
 #endif
   NPAIR_OMP_SETUP(nlocal);
 
-  int i,j,k,m,n,nn,ibin;
+  int i,j,k,n,ibin;
   double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   double radi,radsum,cutsq;
   int *neighptr;
 
   double **x = atom->x;
   double *radius = atom->radius;
-  tagint *tag = atom->tag;
   int *type = atom->type;
   int *mask = atom->mask;
   tagint *molecule = atom->molecule;
diff --git a/src/USER-OMP/npair_half_size_nsq_newtoff_omp.cpp b/src/USER-OMP/npair_half_size_nsq_newtoff_omp.cpp
index 3c7b6b118f..1615effad3 100644
--- a/src/USER-OMP/npair_half_size_nsq_newtoff_omp.cpp
+++ b/src/USER-OMP/npair_half_size_nsq_newtoff_omp.cpp
@@ -51,14 +51,13 @@ void NPairHalfSizeNsqNewtoffOmp::build(NeighList *list)
 #endif
   NPAIR_OMP_SETUP(nlocal);
 
-  int i,j,m,n,nn;
+  int i,j,n;
   double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   double radi,radsum,cutsq;
   int *neighptr;
 
   double **x = atom->x;
   double *radius = atom->radius;
-  tagint *tag = atom->tag;
   int *type = atom->type;
   int *mask = atom->mask;
   tagint *molecule = atom->molecule;
diff --git a/src/USER-OMP/npair_half_size_nsq_newton_omp.cpp b/src/USER-OMP/npair_half_size_nsq_newton_omp.cpp
index 37a4181af7..e5de57aa51 100644
--- a/src/USER-OMP/npair_half_size_nsq_newton_omp.cpp
+++ b/src/USER-OMP/npair_half_size_nsq_newton_omp.cpp
@@ -52,7 +52,7 @@ void NPairHalfSizeNsqNewtonOmp::build(NeighList *list)
 #endif
   NPAIR_OMP_SETUP(nlocal);
 
-  int i,j,m,n,nn,itag,jtag;
+  int i,j,n,itag,jtag;
   double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   double radi,radsum,cutsq;
   int *neighptr;
diff --git a/src/npair_half_size_bin_newtoff.cpp b/src/npair_half_size_bin_newtoff.cpp
index cf608b5d59..d575f3eb1f 100644
--- a/src/npair_half_size_bin_newtoff.cpp
+++ b/src/npair_half_size_bin_newtoff.cpp
@@ -36,14 +36,13 @@ NPairHalfSizeBinNewtoff::NPairHalfSizeBinNewtoff(LAMMPS *lmp) : NPair(lmp) {}
 
 void NPairHalfSizeBinNewtoff::build(NeighList *list)
 {
-  int i,j,k,m,n,nn,ibin;
+  int i,j,k,n,ibin;
   double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   double radi,radsum,cutsq;
   int *neighptr;
 
   double **x = atom->x;
   double *radius = atom->radius;
-  tagint *tag = atom->tag;
   int *type = atom->type;
   int *mask = atom->mask;
   tagint *molecule = atom->molecule;
diff --git a/src/npair_half_size_bin_newton.cpp b/src/npair_half_size_bin_newton.cpp
index 662bf91d6e..da29cb2029 100644
--- a/src/npair_half_size_bin_newton.cpp
+++ b/src/npair_half_size_bin_newton.cpp
@@ -35,14 +35,13 @@ NPairHalfSizeBinNewton::NPairHalfSizeBinNewton(LAMMPS *lmp) : NPair(lmp) {}
 
 void NPairHalfSizeBinNewton::build(NeighList *list)
 {
-  int i,j,k,m,n,nn,ibin;
+  int i,j,k,n,ibin;
   double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   double radi,radsum,cutsq;
   int *neighptr;
 
   double **x = atom->x;
   double *radius = atom->radius;
-  tagint *tag = atom->tag;
   int *type = atom->type;
   int *mask = atom->mask;
   tagint *molecule = atom->molecule;
diff --git a/src/npair_half_size_bin_newton_tri.cpp b/src/npair_half_size_bin_newton_tri.cpp
index e70c072280..044847ba8c 100644
--- a/src/npair_half_size_bin_newton_tri.cpp
+++ b/src/npair_half_size_bin_newton_tri.cpp
@@ -36,14 +36,13 @@ NPairHalfSizeBinNewtonTri::NPairHalfSizeBinNewtonTri(LAMMPS *lmp) :
 
 void NPairHalfSizeBinNewtonTri::build(NeighList *list)
 {
-  int i,j,k,m,n,nn,ibin;
+  int i,j,k,n,ibin;
   double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   double radi,radsum,cutsq;
   int *neighptr;
 
   double **x = atom->x;
   double *radius = atom->radius;
-  tagint *tag = atom->tag;
   int *type = atom->type;
   int *mask = atom->mask;
   tagint *molecule = atom->molecule;
diff --git a/src/npair_half_size_nsq_newtoff.cpp b/src/npair_half_size_nsq_newtoff.cpp
index e6f5cba657..50a32c87ba 100644
--- a/src/npair_half_size_nsq_newtoff.cpp
+++ b/src/npair_half_size_nsq_newtoff.cpp
@@ -36,14 +36,13 @@ NPairHalfSizeNsqNewtoff::NPairHalfSizeNsqNewtoff(LAMMPS *lmp) : NPair(lmp) {}
 
 void NPairHalfSizeNsqNewtoff::build(NeighList *list)
 {
-  int i,j,m,n,nn,bitmask;
+  int i,j,n,bitmask;
   double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   double radi,radsum,cutsq;
   int *neighptr;
 
   double **x = atom->x;
   double *radius = atom->radius;
-  tagint *tag = atom->tag;
   int *type = atom->type;
   int *mask = atom->mask;
   tagint *molecule = atom->molecule;
diff --git a/src/npair_half_size_nsq_newton.cpp b/src/npair_half_size_nsq_newton.cpp
index 78811170cb..343172fb98 100644
--- a/src/npair_half_size_nsq_newton.cpp
+++ b/src/npair_half_size_nsq_newton.cpp
@@ -37,7 +37,7 @@ NPairHalfSizeNsqNewton::NPairHalfSizeNsqNewton(LAMMPS *lmp) : NPair(lmp) {}
 
 void NPairHalfSizeNsqNewton::build(NeighList *list)
 {
-  int i,j,m,n,nn,itag,jtag,bitmask;
+  int i,j,n,itag,jtag,bitmask;
   double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   double radi,radsum,cutsq;
   int *neighptr;
diff --git a/src/npair_skip_size.cpp b/src/npair_skip_size.cpp
index 075387f5b0..b75856dde4 100644
--- a/src/npair_skip_size.cpp
+++ b/src/npair_skip_size.cpp
@@ -33,14 +33,10 @@ NPairSkipSize::NPairSkipSize(LAMMPS *lmp) : NPair(lmp) {}
 
 void NPairSkipSize::build(NeighList *list)
 {
-  int i,j,ii,jj,m,n,nn,itype,jnum,joriginal,dnum,dnumbytes;
-  tagint jtag;
+  int i,j,ii,jj,n,itype,jnum,joriginal;
   int *neighptr,*jlist;
 
-  tagint *tag = atom->tag;
   int *type = atom->type;
-  int nlocal = atom->nlocal;
-
   int *ilist = list->ilist;
   int *numneigh = list->numneigh;
   int **firstneigh = list->firstneigh;
diff --git a/src/npair_skip_size_off2on.cpp b/src/npair_skip_size_off2on.cpp
index 92eae285d0..8d728a3c0a 100644
--- a/src/npair_skip_size_off2on.cpp
+++ b/src/npair_skip_size_off2on.cpp
@@ -34,7 +34,7 @@ NPairSkipSizeOff2on::NPairSkipSizeOff2on(LAMMPS *lmp) : NPair(lmp) {}
 
 void NPairSkipSizeOff2on::build(NeighList *list)
 {
-  int i,j,ii,jj,m,n,nn,itype,jnum,joriginal,dnum,dnumbytes;
+  int i,j,ii,jj,n,itype,jnum,joriginal;
   tagint itag,jtag;
   int *neighptr,*jlist;
 
diff --git a/src/npair_skip_size_off2on_oneside.cpp b/src/npair_skip_size_off2on_oneside.cpp
index f2fca7b128..a04fc7782c 100644
--- a/src/npair_skip_size_off2on_oneside.cpp
+++ b/src/npair_skip_size_off2on_oneside.cpp
@@ -37,11 +37,9 @@ NPairSkipSizeOff2onOneside::NPairSkipSizeOff2onOneside(LAMMPS *lmp) :
 
 void NPairSkipSizeOff2onOneside::build(NeighList *list)
 {
-  int i,j,ii,jj,m,n,nn,itype,jnum,joriginal,flip,dnum,dnumbytes,tmp;
-  tagint jtag;
+  int i,j,ii,jj,n,itype,jnum,joriginal,flip,tmp;
   int *surf,*jlist;
 
-  tagint *tag = atom->tag;
   int *type = atom->type;
   int nlocal = atom->nlocal;