diff --git a/lib/sentry/interfaces.ex b/lib/sentry/interfaces.ex
index 0855ad2c..3f406ee0 100644
--- a/lib/sentry/interfaces.ex
+++ b/lib/sentry/interfaces.ex
@@ -267,4 +267,56 @@ defmodule Sentry.Interfaces do
       :stacktrace
     ]
   end
+
+  defmodule Span do
+    @moduledoc """
+    The struct for a tracing **span**.
+
+    See <https://develop.sentry.dev/sdk/event-payloads/span>.
+    """
+
+    @moduledoc since: "11.0.0"
+
+    @typedoc since: "11.0.0"
+    @type t() :: %__MODULE__{
+            start_timestamp: String.t() | number(),
+            timestamp: String.t() | number(),
+            span_id: String.t(),
+            parent_span_id: String.t() | nil,
+            description: String.t(),
+            tags: map(),
+            trace_id: String.t() | nil,
+            op: String.t(),
+            spans: [t()],
+            status: String.t(),
+            data: map(),
+            origin: String.t(),
+            measurements: %{
+              optional(String.t()) => %{required(:value) => term(), optional(:unit) => String.t()}
+            },
+
+            # Attributes that are only for "transactions", which are basically the root
+            # span of a trace. https://develop.sentry.dev/sdk/event-payloads/transaction/
+            event_id: String.t() | nil,
+            transaction_info: %{source: :custom | :url | :route | :view | :component | :task}
+          }
+
+    defstruct [
+      :event_id,
+      :description,
+      :tags,
+      :parent_span_id,
+      :trace_id,
+      :op,
+      :span_id,
+      :start_timestamp,
+      :timestamp,
+      :spans,
+      :measurements,
+      :transaction_info,
+      :status,
+      :data,
+      :origin
+    ]
+  end
 end