First recorded by The Seekers (1966).
Hit version by The Cyrkle (US #2/CAN #1 1966).
Also recorded by Neil Diamond (1966), Mel Tormé (1966), Simon & Gardfunkel (1967, released 1997), The Diodes (1977).
From the wiki: “‘Red Rubber Ball’ was co-written by Paul Simon (of Simon and Garfunkel) and Bruce Woodley (of The Seekers). In an interview on The Colbert Report, Simon said he wrote ‘Red Rubber Ball’ while living in England, to get a £100 advance from The Seekers. The Seekers were the to record ‘Red Rubber Ball’, for their 1966 album Come the Day (US album title: Georgy Girl), but the song was not released as a single.
“According to Cyrkle guitarist Tom Dawes, Simon also offered it to the Cyrkle when they were opening for Simon and Garfunkel on tour in England.