diff --git a/src/atom.cpp b/src/atom.cpp
index afd30b6a98..0c6487357f 100644
--- a/src/atom.cpp
+++ b/src/atom.cpp
@@ -609,9 +609,6 @@ void Atom::tag_extend()
 
 int Atom::tag_consecutive()
 {
-  int check[2],check_all[2];
-  check[0] = check[1] = 0;
-
   int idmin = static_cast<int> (natoms);
   int idmax = 0;
   
diff --git a/src/compute_temp_com.cpp b/src/compute_temp_com.cpp
index 9891421a74..7ded6c967b 100644
--- a/src/compute_temp_com.cpp
+++ b/src/compute_temp_com.cpp
@@ -130,7 +130,6 @@ void ComputeTempCOM::compute_vector()
   if (dynamic) masstotal = group->mass(igroup);
   group->vcm(igroup,masstotal,vbias);
 
-  double **x = atom->x;
   double **v = atom->v;
   double *mass = atom->mass;
   double *rmass = atom->rmass;
diff --git a/src/delete_atoms.cpp b/src/delete_atoms.cpp
index 3c4299a3cc..8cd9edf7c7 100644
--- a/src/delete_atoms.cpp
+++ b/src/delete_atoms.cpp
@@ -237,9 +237,8 @@ void DeleteAtoms::delete_overlap(int narg, char **arg)
   int nall = atom->nlocal + atom->nghost;
   double *special_coul = force->special_coul;
   double *special_lj = force->special_lj;
-  int newton_pair = force->newton_pair;
 
-  int i,j,ii,jj,m,inum,jnum,itype,jtype;
+  int i,j,ii,jj,inum,jnum,itype;
   double xtmp,ytmp,ztmp,delx,dely,delz,rsq;
   int *ilist,*jlist,*numneigh,**firstneigh;
 
diff --git a/src/fix_ave_time.cpp b/src/fix_ave_time.cpp
index c8ff49945a..5712b1b205 100644
--- a/src/fix_ave_time.cpp
+++ b/src/fix_ave_time.cpp
@@ -288,8 +288,6 @@ void FixAveTime::init()
   // set indices and check validity of all computes,fixes,variables
   // check that fix frequency is acceptable
 
-  int ilist = 0;
-
   for (int i = 0; i < nvalues; i++) {
     if (which[i] == COMPUTE) {
       int icompute = modify->find_compute(ids[i]);
@@ -328,8 +326,7 @@ void FixAveTime::setup(int vflag)
 
 void FixAveTime::end_of_step()
 {
-  int i,j,k,m;
-  double tmp;
+  int i,m;
 
   // skip if not step which requires doing something
 
@@ -345,8 +342,6 @@ void FixAveTime::end_of_step()
 
   modify->clearstep_compute();
 
-  int ilist = 0;
-
   for (i = 0; i < nvalues; i++) {
     m = value2index[i];
 
diff --git a/src/fix_nvt_sllod.cpp b/src/fix_nvt_sllod.cpp
index 7c3f303a2f..5f98838d4e 100644
--- a/src/fix_nvt_sllod.cpp
+++ b/src/fix_nvt_sllod.cpp
@@ -129,7 +129,6 @@ void FixNVTSlodd::final_integrate()
   // thermostat thermal velocity only
   // vdelu = SLLOD correction = Hrate*Hinv*vthermal
 
-  double **x = atom->x;
   double **v = atom->v;
   double **f = atom->f;
   double *mass = atom->mass;
diff --git a/src/fix_nvt_sphere.cpp b/src/fix_nvt_sphere.cpp
index 67faeafb3d..b86d27ee85 100644
--- a/src/fix_nvt_sphere.cpp
+++ b/src/fix_nvt_sphere.cpp
@@ -88,7 +88,6 @@ void FixNVTSphere::initial_integrate(int vflag)
   double **x = atom->x;
   double **v = atom->v;
   double **f = atom->f;
-  double **quat = atom->quat;
   double **omega = atom->omega;
   double **torque = atom->torque;
   double *mass = atom->mass;
diff --git a/src/fix_viscosity.cpp b/src/fix_viscosity.cpp
index f542a31fea..3b62746307 100644
--- a/src/fix_viscosity.cpp
+++ b/src/fix_viscosity.cpp
@@ -138,7 +138,7 @@ void FixViscosity::init()
 void FixViscosity::end_of_step()
 {
   int i,m,insert;
-  double p,coord,delta;
+  double coord,delta;
   MPI_Status status;
   struct {
     double value;
diff --git a/src/min_cg.cpp b/src/min_cg.cpp
index 3b55ca9b93..472381529e 100644
--- a/src/min_cg.cpp
+++ b/src/min_cg.cpp
@@ -502,7 +502,7 @@ void MinCG::force_clear()
 int MinCG::linemin_backtrack(int n, double *x, double *dir, double eng,
 			     double maxdist, double &alpha, int &nfunc)
 {
-  int i,m;
+  int i;
 
   // stopping criterion, must be scaled by normflag