Craig Smith is leaving Ashfield while Graeme Eaglesham is returning from a scholarship in America.
Defender Daryll Meggat will bolster Gardner Speirs's defence, having left South Camlachie.
Speirs recruited David Anderson from Kilbirnie earlier this summer.
"With Jamie Longworth and Davie Anderson, we had watched them about a dozen times over the course of last season and I'm delighted that we've been able to attract them to the club," Speirs told the Queen's Park website. "I'm sure they'll be good additions to the side.
"Jamie Longworth scored 31 goals last season which is good in anyone's language and if he can score anything like that for us, we'll be delighted.
"Daryll Meggatt comes to the club having actually been with us for a couple of months last season with the under-19s.
"Our scouts kept an eye on him, he played a couple of games for us and he was then fully signed up. He's a strong, left-sided player - good on the ball and he can play at centre-half, left-back and given time, hopefully midfield too."
Source: BBC Sport
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