GE U30B

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{{Infobox locomotive

| name=GE U30B

| powertype=Diesel-electric

| image=CSX 5359 at Atlanta, GA on June 10, 1987 (22146057823).jpg

| caption=CSX 5359, A U30B at Atlanta, Georgia, in June 1987.

| gauge={{track gauge|ussg}}

| builder=GE Transportation Systems

| buildmodel=U30B

| poweroutput={{convert|3000|hp|kW|abbr=on|lk=on}}

| cylindercount=16

| aarwheels=B-B

| primemover=GE FDL-16

| enginetype= V16 diesel

| builddate=May 1966 – March 1975

| totalproduction=295

}}

The GE U30B was a diesel-electric locomotive produced by GE Transportation between 1966 and 1975. It was a further development of the U28B, with a {{convert|3000|hp|kW|abbr=on}} 16-cylinder prime mover.{{Cite book|last=Marre|first=Louis A.|url=https://www.worldcat.org/oclc/34531120|title=Diesel locomotives : the first 50 years : a guide to diesels built before 1972|date=1995|publisher=Kalmbach Pub. Co|isbn=0-89024-258-5|location=Waukesha, WI|pages=171–172|oclc=34531120}} The U30B competed with the EMD GP40 and the ALCO Century 430, but was not as successful as the GE U30C.