diff --git a/R/1.0_module_data_summary.R b/R/1.0_module_data_summary.R
index 48675020f5..2796fa731d 100644
--- a/R/1.0_module_data_summary.R
+++ b/R/1.0_module_data_summary.R
@@ -140,8 +140,17 @@ get_filter_overview <- function(teal_data) {
     simplify = FALSE
   )
 
-  rows <- lapply(
+  child_parent <- sapply(
     datanames,
+    function(i) teal.data::parent(joinkeys, i),
+    USE.NAMES = TRUE,
+    simplify = FALSE
+  )
+  ordered_datanames <- topological_sort(child_parent)
+  ordered_datanames <- intersect(ordered_datanames, datanames)
+
+  rows <- lapply(
+    ordered_datanames,
     function(dataname) {
       parent <- teal.data::parent(joinkeys, dataname)
 
@@ -149,7 +158,6 @@ get_filter_overview <- function(teal_data) {
       #     - Obs and Subjects
       #     - Obs only
       #     - Subjects only
-      # todo: summary table should be ordered by topological order
       # todo (for later): summary table should be displayed in a way that child datasets
       #       are indented under their parent dataset to form a tree structure
       subject_keys <- if (length(parent) > 0) {
@@ -260,3 +268,17 @@ get_object_filter_overview_MultiAssayExperiment <- function(filtered_data, # nol
   experiment_info <- cbind(experiment_obs_info[, c("dataname", "obs", "obs_filtered")], experiment_subjects_info)
   rbind(mae_info, experiment_info)
 }
+
+
+#' @inherit teal.data::topological_sort description details params title
+#' @examples
+#' # use non-exported function from teal.slice
+#' topological_sort <- getFromNamespace("topological_sort", "teal.slice")
+#'
+#' topological_sort(list(A = c(), B = c("A"), C = c("B"), D = c("A")))
+#' topological_sort(list(D = c("A"), A = c(), B = c("A"), C = c("B")))
+#' topological_sort(list(D = c("A"), B = c("A"), C = c("B"), A = c()))
+#' @keywords internal
+topological_sort <- function(graph) {
+  utils::getFromNamespace("topological_sort", ns = "teal.data")(graph)
+}
diff --git a/man/topological_sort.Rd b/man/topological_sort.Rd
new file mode 100644
index 0000000000..db5e4132fa
--- /dev/null
+++ b/man/topological_sort.Rd
@@ -0,0 +1,27 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/1.0_module_data_summary.R
+\name{topological_sort}
+\alias{topological_sort}
+\title{Topological graph sort}
+\usage{
+topological_sort(graph)
+}
+\arguments{
+\item{graph}{(\verb{named list}) with node vector elements}
+}
+\description{
+Graph is a \code{list} which for each node contains a vector of child nodes
+in the returned list, parents appear before their children.
+}
+\details{
+Implementation of \code{Kahn} algorithm with a modification to maintain the order of input elements.
+}
+\examples{
+# use non-exported function from teal.slice
+topological_sort <- getFromNamespace("topological_sort", "teal.slice")
+
+topological_sort(list(A = c(), B = c("A"), C = c("B"), D = c("A")))
+topological_sort(list(D = c("A"), A = c(), B = c("A"), C = c("B")))
+topological_sort(list(D = c("A"), B = c("A"), C = c("B"), A = c()))
+}
+\keyword{internal}
diff --git a/tests/testthat/test-shinytest2-data_summary.R b/tests/testthat/test-shinytest2-data_summary.R
index aa9618fd79..aba320bf64 100644
--- a/tests/testthat/test-shinytest2-data_summary.R
+++ b/tests/testthat/test-shinytest2-data_summary.R
@@ -36,6 +36,30 @@ testthat::test_that("e2e: data summary is displayed with 2 columns data without
   app$stop()
 })
 
+testthat::test_that("e2e: data summary displays datasets by topological_sort of join_keys", {
+  skip_if_too_deep(5)
+
+  data <- teal.data::teal_data(mtcars1 = mtcars, mtcars2 = data.frame(am = c(0, 1), test = c("a", "b")))
+
+  teal.data::join_keys(data) <- teal.data::join_keys(
+    teal.data::join_key("mtcars2", "mtcars1", keys = c("am"))
+  )
+
+  app <- TealAppDriver$new(
+    data = data,
+    modules = example_module()
+  )
+
+  testthat::expect_identical(
+    testthat::expect_identical(
+      as.data.frame(app$get_active_data_summary_table())[["Data Name"]],
+      c("mtcars2", "mtcars1")
+    )
+  )
+
+  app$stop()
+})
+
 testthat::test_that("e2e: data summary is displayed with 3 columns for data with join keys", {
   skip_if_too_deep(5)
 
@@ -53,9 +77,9 @@ testthat::test_that("e2e: data summary is displayed with 3 columns for data with
   testthat::expect_identical(
     as.data.frame(app$get_active_data_summary_table()),
     data.frame(
-      `Data Name` = c("mtcars1", "mtcars2"),
-      Obs = c("32/32", "2/2"),
-      Subjects = c("2/2", "2/2"),
+      `Data Name` = c("mtcars2", "mtcars1"),
+      Obs = c("2/2", "32/32"),
+      Subjects = c("", "2/2"),
       check.names = FALSE
     )
   )
@@ -97,10 +121,10 @@ testthat::test_that(
       data.frame(
         `Data Name` = c(
           "CO2", "iris", "miniACC", "- RNASeq2GeneNorm", "- gistict", "- RPPAArray", "- Mutations", "- miRNASeqGene",
-          "mtcars1", "mtcars2", "factors"
+          "mtcars2", "mtcars1", "factors"
         ),
-        Obs = c("84/84", "150/150", "", "198/198", "198/198", "33/33", "97/97", "471/471", "32/32", "2/2", ""),
-        Subjects = c("", "", "92/92", "79/79", "90/90", "46/46", "90/90", "80/80", "2/2", "2/2", ""),
+        Obs = c("84/84", "150/150", "", "198/198", "198/198", "33/33", "97/97", "471/471", "2/2", "32/32", ""),
+        Subjects = c("", "", "92/92", "79/79", "90/90", "46/46", "90/90", "80/80", "", "2/2", ""),
         check.names = FALSE
       )
     )
@@ -108,3 +132,21 @@ testthat::test_that(
     app$stop()
   }
 )
+
+testthat::test_that("e2e: data summary displays datasets by datanames() order if no join_keys", {
+  skip_if_too_deep(5)
+
+  data <- teal.data::teal_data(mtcars1 = mtcars, mtcars2 = data.frame(am = c(0, 1), test = c("a", "b")))
+
+  app <- TealAppDriver$new(
+    data = data,
+    modules = example_module()
+  )
+
+  testthat::expect_identical(
+    as.data.frame(app$get_active_data_summary_table())[["Data Name"]],
+    c("mtcars1", "mtcars2")
+  )
+
+  app$stop()
+})