Bolshoy Ik

{{distinguish|Ik (river)}}

{{Infobox river

| name = Bolshoy Ik

| image = Very small ford across Bol'shoy Ik.jpg

| image_caption = Very small ford across the Bolshoy Ik

| source1_location = South Urals, Bashkortostan

| mouth = Sakmara

| mouth_location = Saraktash, Orenburg Oblast

| mouth_coordinates = {{coord|51|49|24|N|56|23|22|E|source:kolossus-ruwiki|display=it}}

| progression = Sakmara→ {{RUral}}

| subdivision_type1 = Country

| subdivision_name1 = Bashkortostan and Orenburg Oblast, Russia

| length_km = 341

| source1_elevation =

| mouth_elevation =

| discharge1_avg = {{convert|61|m3/s|cuft/s|abbr=on}}

| basin_size_km2 = 7670

}}

The Bolshoy Ik ({{langx|ru|Большой Ик}}, literally Greater Ik; {{langx|ba|Оло Ыйыҡ}}, Olo Iyıq) is a tributary of the Sakmara, which flows south from the southern end of the Ural Mountains in Bashkortostan and Orenburg Oblast, Russia. The Bolshoy Ik flows into the Sakmara at Saraktash.

The river is generally fed by snowmelt.[http://bse.sci-lib.com/article128702.html Большой Ик], Great Soviet Encyclopedia