diff --git a/Superbuild/Superbuild.cmake b/Superbuild/Superbuild.cmake
index 33300e30ee..609a124e7e 100644
--- a/Superbuild/Superbuild.cmake
+++ b/Superbuild/Superbuild.cmake
@@ -103,7 +103,15 @@ OPTION(WITH_TETGEN "Build Tetgen." ON)
 
 ###########################################
 # Configure ospray
-OPTION(WITH_OSPRAY "Build Ospray." OFF)
+OPTION(BUILD_OSPRAY "Build Ospray." OFF)
+
+###########################################
+# Use local ospray
+OPTION(PREBUILT_OSPRAY "Use prebuilt copy of Ospray." OFF)
+
+IF (BUILD_OSPRAY AND PREBUILT_OSPRAY)
+  MESSAGE(SEND_ERROR "Cannot set both building and prebuilt Ospray.")
+ENDIF()
 
 ###########################################
 # Configure data
@@ -240,12 +248,15 @@ IF(WITH_TETGEN)
   ADD_EXTERNAL( ${SUPERBUILD_DIR}/TetgenExternal.cmake Tetgen_external )
 ENDIF()
 
-IF(WITH_OSPRAY)
+IF(PREBUILT_OSPRAY)
+  find_package(ospray 2.10.0 REQUIRED)
+ELSEIF(BUILD_OSPRAY)
   #INCLUDE(${SUPERBUILD_DIR}/TBBExternal.cmake)
   #INCLUDE(${SUPERBUILD_DIR}/RKCommonExternal.cmake)
   #INCLUDE(${SUPERBUILD_DIR}/EmbreeExternal.cmake)
   ADD_EXTERNAL(${SUPERBUILD_DIR}/OsprayExternal.cmake Ospray_external)
 ENDIF()
+SET(WITH_OSPRAY (BUILD_OSPRAY || PREBUILT_OSPRAY))
 
 IF(NOT BUILD_HEADLESS)
   ADD_EXTERNAL( ${SUPERBUILD_DIR}/QwtExternal.cmake Qwt_external )
diff --git a/docs/start/build.md b/docs/start/build.md
index bf66566261..4bb9871743 100644
--- a/docs/start/build.md
+++ b/docs/start/build.md
@@ -153,5 +153,9 @@ make
 ```
 Append `-jN`, where N is the number of threads, to build multi-threaded.
 
+### Configuring SCIRun with Prebuilt OSPRay
+
+To use the OsprayViewer module with a prebuilt binary, you need to download from the [releases page](https://github.com/ospray/OSPRay/releases) and extract the zip. Only OSPRay 2.4 and 2.10 have been tested. Then add the directory to your shell's PATH variable. CMake will automatically find it when the flag `PREBUILT_OSPRAY` is enabled.
+
 ## Tagging Releases
 On an OSX system, run script `release.sh` in the `src` directory with the release name in format ***beta.XX*** as a parameter.