diff --git a/CODEOWNERS b/CODEOWNERS
index 99d6697f2..d80e25b09 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -36,7 +36,6 @@ physics/GWD/ugwpv1_gsldrag_post.*                                            @md
 physics/GWD/unified_ugwp*                                                    @mdtoyNOAA                                @grantfirl @Qingfu-Liu @dustinswales
 physics/MP/Ferrier_Aligo/module_MP_FER_HIRES.*                               @ericaligo-NOAA                           @grantfirl @Qingfu-Liu @dustinswales
 physics/MP/Ferrier_Aligo/mp_fer_hires.*                                      @ericaligo-NOAA                           @grantfirl @Qingfu-Liu @dustinswales
-physics/MP/GFDL/GFDL_parse_tracers.F90                                                                                 @grantfirl @Qingfu-Liu @dustinswales
 physics/MP/GFDL/gfdl_cloud_microphys.*                                       @RuiyuSun                                 @grantfirl @Qingfu-Liu @dustinswales
 physics/MP/GFDL/module_gfdl_cloud_microphys.*                                @RuiyuSun                                 @grantfirl @Qingfu-Liu @dustinswales
 physics/MP/GFDL/fv_sat_adj.*                                                 @RuiyuSun                                 @grantfirl @Qingfu-Liu @dustinswales
diff --git a/physics/MP/GFDL/GFDL_parse_tracers.F90 b/physics/MP/GFDL/GFDL_parse_tracers.F90
deleted file mode 100644
index 670c292ee..000000000
--- a/physics/MP/GFDL/GFDL_parse_tracers.F90
+++ /dev/null
@@ -1,45 +0,0 @@
-!>\file GFDL_parse_tracers.F90
-!!
-
-!> This module contains code to parse tracers in GFDL MP
-module parse_tracers
-
-  integer, parameter :: NO_TRACER = -99
-
-  public get_tracer_index, NO_TRACER
-
-CONTAINS
-
-  function get_tracer_index (tracer_names, name, me, master, debug)
-
-    character(len=32), intent(in) :: tracer_names(:)
-    character(len=*),  intent(in) :: name
-    integer,           intent(in) :: me
-    integer,           intent(in) :: master
-    logical,           intent(in) :: debug
-    !--- local variables
-    integer :: get_tracer_index
-    integer :: i
-
-    get_tracer_index = NO_TRACER
-
-    do i=1, size(tracer_names)
-       if (trim(name) == trim(tracer_names(i))) then
-           get_tracer_index = i
-           exit
-       endif
-    enddo
-
-    if (debug .and. (me == master)) then
-      if (get_tracer_index == NO_TRACER) then
-        print *,' PE ',me,' tracer with name '//trim(name)//' not found'
-      else
-        print *,' PE ',me,' tracer FOUND:',trim(name)
-      endif
-    endif
-
-    return
-
-  end function get_tracer_index
-
-end module parse_tracers
diff --git a/physics/NRL_parse_tracers.F90 b/physics/NRL_parse_tracers.F90
deleted file mode 100644
index 9c7a0ba36..000000000
--- a/physics/NRL_parse_tracers.F90
+++ /dev/null
@@ -1,90 +0,0 @@
-! This module is the NRL replacement for the parse_tracers module
-! in GFDL_parse_tracers.F90. It translates the tracer names used
-! in GFS_typedefs (stemming from the FV3 dycore at GFDL) into
-! the correct names used at NRL so that all tracer indices defined
-! in GFS_typedefs either retain the original value from NRL (if
-! in use) or are correctly set to NO_TRACER (if not in use).
-module parse_tracers
-
-  integer, parameter :: NO_TRACER = -99
-
-  public get_tracer_index, NO_TRACER
-
-CONTAINS
-
-  function get_tracer_index (tracer_names, gfdl_name, me, master, debug)
-
-    character(len=32), intent(in) :: tracer_names(:)
-    character(len=*),  intent(in) :: gfdl_name
-    integer,           intent(in) :: me
-    integer,           intent(in) :: master
-    logical,           intent(in) :: debug
-    !--- local variables
-    character(len=32) :: name
-    integer :: get_tracer_index
-    integer :: i
-
-    get_tracer_index = NO_TRACER
-
-    do i=1, size(tracer_names)
-       select case(trim(gfdl_name))
-         ! Should not make it to here, since ntqv is hardcoded to 1
-         !case '???'
-         !  name = 'water_vapor_mixing_ratio'
-         case ('o3mr')
-           name = 'ozone_mixing_ratio'
-         case ('liq_wat')
-           name = 'cloud_water_mixing_ratio'
-         case ('ice_wat')
-           name = 'cloud_ice_mixing_ratio'
-         case ('rainwat')
-           name = 'rain_mixing_ratio'
-         case ('snowwat')
-           name = 'snow_mixing_ratio'
-         case ('graupel')
-           name = 'graupel_mixing_ratio'
-         case ('cld_amt')
-           name = 'cloud_fraction_updated_by_physics'
-         case ('water_nc')
-           name = 'number_concentration_of_cloud_droplets'
-         case ('ice_nc')
-           name = 'number_concentration_of_cloud_ic'
-         case ('rain_nc')
-           name = 'number_concentration_of_rain'
-         case ('snow_nc')
-           name = 'number_concentration_of_snow'
-         case ('graupel_nc')
-           name = 'number_concentration_of_graupel'
-         case ('sgs_tke')
-           name = 'turbulent_kinetic_energy'
-         case ('liq_aero')
-           name = 'number_concentration_of_water_friendly_aerosols'
-         case ('ice_aero')
-           name = 'number_concentration_of_ice_friendly_aerosols'
-         case ('q_rimef')
-           name = 'mass_weighted_rime_factor'
-         case default
-           name = trim(gfdl_name)
-           if (debug .and. (me == master)) then
-             print *,' PE ',me,' no translation found for tracer with GFDL name '//trim(gfdl_name)//' - use as is'
-           endif
-       end select
-       if (trim(name) == trim(tracer_names(i))) then
-           get_tracer_index = i
-           exit
-       endif
-    enddo
-
-    if (debug .and. (me == master)) then
-      if (get_tracer_index == NO_TRACER) then
-        print *,' PE ',me,' tracer with name '//trim(gfdl_name)//'='//trim(name)//' not found'
-      else
-        print *,' PE ',me,' tracer FOUND: '//trim(gfdl_name)//'='//trim(name)
-      endif
-    endif
-
-    return
-
-  end function get_tracer_index
-
-end module parse_tracers
diff --git a/physics/docs/ccpp_doxyfile b/physics/docs/ccpp_doxyfile
index 7e40361ae..4f62402e6 100644
--- a/physics/docs/ccpp_doxyfile
+++ b/physics/docs/ccpp_doxyfile
@@ -1066,7 +1066,6 @@ EXCLUDE                = ../Radiation/RRTMGP/rte-rrtmgp \
                          ../MP/Ferrier_Aligo \
                          ../MP/Zhao_Carr \
                          ../PBL/MYJ \
-                         ../MP/GFDL/GFDL_parse_tracers.F90 \
                          ../PBL/HEDMF \
                          ../PBL/SHOC \
                          ../PBL/saYSU \