diff --git a/CHANGELOG.md b/CHANGELOG.md
index be1fc074..73f8014a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,6 +53,7 @@
 - Group working directories of servers inside a replica set into one directory.
 - Fix collecting coverage if tarantool binary has a suffix.
 - Add `--no-clean` option to disable deletion of the var directory.
+- Add new assert function `assert_one_of`.
 
 ## 0.5.7
 
diff --git a/README.rst b/README.rst
index 91f1499f..c849a0ee 100644
--- a/README.rst
+++ b/README.rst
@@ -170,6 +170,8 @@ List of luatest functions
 +--------------------------------------------------------------------+-----------------------------------------------+
 | ``assert_covers (actual, expected[, message])``                    | Checks that actual map includes expected one. |
 +--------------------------------------------------------------------+-----------------------------------------------+
+| ``assert_one_of (actual, expected[, message])``                    | Checks that value is one of alternatives.     |
++--------------------------------------------------------------------+-----------------------------------------------+
 | ``assert_lt (left, right[, message])``                             | Compare numbers.                              |
 +--------------------------------------------------------------------+-----------------------------------------------+
 | ``assert_le (left, right[, message])``                             |                                               |
diff --git a/luatest/assertions.lua b/luatest/assertions.lua
index 6902133e..9b1f5b54 100644
--- a/luatest/assertions.lua
+++ b/luatest/assertions.lua
@@ -276,6 +276,25 @@ function M.assert_ge(left, right, message)
     end
 end
 
+--- Check that value is one of alternatives.
+--
+-- @param actual
+-- @param expected
+-- @string[opt] message
+function M.assert_one_of(actual, expected, message)
+    local res = false
+    for _, v in ipairs(expected) do
+        if comparator.equals(actual, v) then
+            res = true
+            break
+        end
+    end
+    if not res then
+        local str_actual, str_expected = prettystr_pairs(actual, expected)
+        fail_fmt(2, message, 'Assertion failed: %s must be one of %s', str_actual, str_expected)
+    end
+end
+
 --- Check that two values are not equal.
 -- Tables are compared by value.
 --
diff --git a/test/luaunit/assertions_test.lua b/test/luaunit/assertions_test.lua
index bdc17055..07e216f6 100644
--- a/test/luaunit/assertions_test.lua
+++ b/test/luaunit/assertions_test.lua
@@ -969,6 +969,16 @@ function g.test_assertTableAdditions()
     t.assert_not_equals({1,x=2,3,y=4}, {1,x=2,3})
 end
 
+function g.test_assert_one_of()
+    t.assert_one_of(1, {1,2,3})
+    t.assert_one_of({1}, {{1},{2},{3}})
+    t.assert_one_of("two", {"one", "two"})
+
+    assert_failure_contains("oh no", t.assert_one_of, 1, {2,3}, "oh no")
+    assert_failure_contains("Assertion failed: 1 must be one of {2, 3}", t.assert_one_of, 1, {2,3})
+    assert_failure_contains("Assertion failed: {1} must be one of {{2}, {3}}", t.assert_one_of, {1}, {{2},{3}})
+end
+
 g.test_assert_comparisons = function()
     -- assert_lt
     t.assert_lt(1.9, 2)