diff --git a/lld/MachO/Driver.cpp b/lld/MachO/Driver.cpp
--- a/lld/MachO/Driver.cpp
+++ b/lld/MachO/Driver.cpp
@@ -312,6 +312,7 @@
     newFile = make<ObjFile>(mbref);
     break;
   case file_magic::macho_dynamically_linked_shared_lib:
+  case file_magic::macho_dynamically_linked_shared_lib_stub:
     newFile = make<DylibFile>(mbref);
     break;
   case file_magic::tapi_file: {
diff --git a/lld/test/MachO/dylib-stub.yaml b/lld/test/MachO/dylib-stub.yaml
new file mode 100644
--- /dev/null
+++ b/lld/test/MachO/dylib-stub.yaml
@@ -0,0 +1,138 @@
+## Stub dylibs differ from "real" dylibs in that they lack any content in their
+## sections. What they do have are export tries and symbol tables, which means
+## we can still link against them. I (jezng) am unclear how to properly create
+## these stub dylibs; XCode 11.3's `lipo` is able to create stub dylibs, but
+## those lack LC_ID_DYLIB load commands and are considered invalid by most
+## tooling. Newer versions of `lipo` aren't able to create stub dylibs at all.
+## However, recent SDKs in XCode still come with valid stub dylibs, so it still
+## seems worthwhile to support them. The YAML in this test was generated by
+## taking a non-stub dylib and editing the appropriate fields.
+
+# REQUIRES: x86
+# RUN: split-file %s %t
+# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/test.s -o %t/test.o
+# RUN: yaml2obj %t/fat.dylib.yaml > fat.dylib
+# RUN: %lld -lSystem %t/test.o fat.dylib -o %t/test
+# RUN: llvm-objdump --macho --lazy-bind %t/test | FileCheck %s
+# CHECK: __DATA   __la_symbol_ptr    0x100001008 foo  _foo
+
+#--- test.s
+.globl _main
+_main:
+  callq _foo
+  ret
+
+#--- fat.dylib.yaml
+--- !fat-mach-o
+FatHeader:
+  magic:           0xCAFEBABE
+  nfat_arch:       1
+FatArchs:
+  - cputype:         0x01000007
+    cpusubtype:      0x00000003
+    offset:          0x0000000000001000
+    size:            16432
+    align:           12
+Slices:
+  - !mach-o
+    FileHeader:
+      magic:           0xFEEDFACF
+      cputype:         0x01000007
+      cpusubtype:      0x00000003
+      filetype:        0x00000009
+      ncmds:           5
+      sizeofcmds:      568
+      flags:           0x00100085
+      reserved:        0x00000000
+    LoadCommands:
+      - cmd:             LC_SEGMENT_64
+        cmdsize:         232
+        segname:         __TEXT
+        vmaddr:          0
+        vmsize:          16384
+        fileoff:         0
+        filesize:        16384
+        maxprot:         5
+        initprot:        5
+        nsects:          1
+        flags:           0
+        Sections:
+          - sectname:        __text
+            segname:         __TEXT
+            addr:            0x0000000000000000
+            size:            0
+            offset:          0x00003FB7
+            align:           0
+            reloff:          0x00000000
+            nreloc:          0
+            flags:           0x80000400
+            reserved1:       0x00000000
+            reserved2:       0x00000000
+            reserved3:       0x00000000
+            content:         ''
+      - cmd:             LC_SEGMENT_64
+        cmdsize:         72
+        segname:         __LINKEDIT
+        vmaddr:          16384
+        vmsize:          16384
+        fileoff:         16384
+        filesize:        48
+        maxprot:         1
+        initprot:        1
+        nsects:          0
+        flags:           0
+      - cmd:             LC_ID_DYLIB
+        cmdsize:         40
+        dylib:
+          name:            24
+          timestamp:       1
+          current_version: 0
+          compatibility_version: 0
+        PayloadString:   foo.dylib
+        ZeroPadBytes:    7
+      - cmd:             LC_DYLD_INFO_ONLY
+        cmdsize:         48
+        rebase_off:      0
+        rebase_size:     0
+        bind_off:        0
+        bind_size:       0
+        weak_bind_off:   0
+        weak_bind_size:  0
+        lazy_bind_off:   0
+        lazy_bind_size:  0
+        export_off:      16384
+        export_size:     16
+      - cmd:             LC_SYMTAB
+        cmdsize:         24
+        symoff:          16408
+        nsyms:           1
+        stroff:          16424
+        strsize:         8
+    LinkEditData:
+      ExportTrie:
+        TerminalSize:    0
+        NodeOffset:      0
+        Name:            ''
+        Flags:           0x0000000000000000
+        Address:         0x0000000000000000
+        Other:           0x0000000000000000
+        ImportName:      ''
+        Children:
+          - TerminalSize:    3
+            NodeOffset:      8
+            Name:            _foo
+            Flags:           0x0000000000000000
+            Address:         0x0000000000003FB7
+            Other:           0x0000000000000000
+            ImportName:      ''
+      NameList:
+        - n_strx:          2
+          n_type:          0x0F
+          n_sect:          1
+          n_desc:          0
+          n_value:         16311
+      StringTable:
+        - ' '
+        - _foo
+        - ''
+...